C Quiz
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Powerpoint Templates Page 1 Powerpoint Templates Anjuman College of Engineering and Technology, Sadar, Nagpur. Computer Science and engineering department presents Envisage’13 “Over C War” By, Shabina Parveen
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Transcript of C Quiz
Powerpoint TemplatesPage 1
Powerpoint Templates
Anjuman College of Engineering and Technology, Sadar, Nagpur.
Computer Science and engineering department
presents
Envisage’13
“Over C War”By, Shabina Parveen
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RULES Each Easy level question consists of 5
marks.Each Medium level question consists of 10
marksEach Hard level question consists of 15
marksAccording to the level chosen for betting,
for each correct answer plus marks & for each wrong answer respective marks will be deducted from the actual score
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Categories
Easy
Medium
Hard
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Question
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Answer
Dennis Ritchie…
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Categories
Easy
Medium
Hard
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QuestionWould the following program give a
compilation error or warning?
#include<stdio.h> int main()
{
float I =10, *j;
void *k;
k = &I;
j = k;
printf(“%f\n”, *j);
return 0;
}
a. Yes b. No
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Answer
b. No
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Categories
Easy
Medium
Hard
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QuestionPredict the output:
# define SQUARE(x) x*x;
inline float square(float y)
{
return y*y;
}
int main()
{
float a = 0.5, b = 0.5, c, d;
c= SQUARE (++a)l;
d = square (++b);
return 0;
}
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Answer
Output: during preprocessing the macro SQUARE gets expanded into c=++x *++x;
You can notice the undesirable side effect in this macro expansion; the output is unpredictable because such side effect must not appear in inline function.
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Categories
Easy
Medium
Hard
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Question Which of the following statement
is true about the >> operator?
a. It divides a positive value by a power of two.
b. It multiplies a positive value by a power of two.
c. It adds a positive value with a power of two.
d. It subtracts from a positive value a power of two.
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Answer
a. It divides a positive value by a power of two.
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Categories
Easy
Medium
Hard
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Question would the following code compile?
#include<stdio.h>
int main()
{
int a = 10, *j; a. Yes
void *k; b. no
j= k = &a;
j++;
k++;
printf(“%u %u\n , j, k”);
return 0;
}
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Answer
b. No
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Categories
Easy
Medium
Hard
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QuestionPredict the output:
#include<stdio.h>
int main()
{
int a[]={0,1,2,3.4};
int i , *p;
for(p=arr,i=0; p+i<=arr+4 ; p++ , i++)
printf(“%d”, , *(p+1));
return 0;
}
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Answer
Output: 024
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Categories
Easy
Medium
Hard
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Question Which of the following
statement is correct?
a. Int a=64<<2;
b. Float a =6.42<<2;
c. Double a = 3.33<<2;
d. Long double a =3.67<<2;
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Answer
a. Int a=64<<2;
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Categories
Easy
Medium
Hard
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Question Would the following program give a compilation
error or warning?
#include<stdio.h>
int main()
{
int *p1, i=25; a. Yes
void *p2; b. no
p1=&i;
p2=&i;
p1=p2;
p2=p1;
return 0;
}
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Answer
b. No
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Categories
Easy
Medium
Hard
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Question
• In a file contains the line "I am a boy\r\n" then on reading this line into the array str using fgets(). What will str contain?
• A. "I am a boy\r\n\0"
• B. "I am a boy\r\0"
• C. "I am a boy\n\0"
• D. "I am a boy"
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Answer
C. "I am a boy\n\0"
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Categories
Easy
Medium
Hard
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Question
What would be the result of the expression a^a?
a. 0
b. 1
c. Sum of two operands
d. Multiplication of two operands
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Answer
a. 0
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Categories
Easy
Medium
Hard
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Question Would the following program give a
compilation error or warning?
#include<stdio.h>
int main()
{
float *p1,i=25.50; a. Yes
char *p2; b. No
p1=&i;
p2=&i;
return 0;
}
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Answer
a. Yes
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Categories
Easy
Medium
Hard
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Question
Write a program in C to display any message without using semi colon anywhere in program?
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Answer
#include <stdio.h>
void main()
{
if(printf(”Hello”))
{}
NOTE: We can write the printf inside while or switch as well for same result.
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Categories
Easy
Medium
Hard
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QuestionWhat will be the output of the code
snippet given below:
#include<stdio.h>
Void main()
{
Int a =10,b =65;
Printf(“%d”,a<<(a&b));
}
a. 65 c. 0
d. 1 b. 10
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Answer
b. 10
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Categories
Easy
Medium
Hard
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Question Predict the output:
#include<stdio.h>
int main()
{
int a[]={10,20,30,40,50};
int j;
for(j=0;j<5;j++)
{
printf(“%d\n”, *a);
a++;
}
return 0;
}
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Answer
Output:
Error message: Lvalue required in function main
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Categories
Easy
Medium
Hard
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Question
#include<stdio.h>
int main()
{
char str[20] = "Hello";
char *const p=str;
*p='M';
printf("%s\n", str);
return 0;
}
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Answer
MELLO
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Categories
Easy
Medium
Hard
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Question Who were the two main individuals
involved in development of K&R standard for C language?
a.Dennis Ritchie & John Von Neumann
b.Brian Kernighan & Dennis Ritchie
c. Grace Hopper & Niklaus Wirth
d. Dennis Ritchie & Bjarne Stroustroup
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Answer
Brian Kernighan and Dennis Ritchie
•
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Categories
Easy
Medium
Hard
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Question Predict the output:
#include<stdio.h>
int main()
{
float a[]={13.24, 1.5, 1.5, 5.4, 3.5};
float *j, *k;
j=a;
k=a+4;
i = j*2;
k =k/2;
printf(“%f %f\n”, *j. *k);
return 0;
}
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Answer
Output:
Error message: illegal use of pointer in function main
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Categories
Easy
Medium
Hard
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Questionvoid main(){
int i=10;
static int x=i;
if(x==i)
printf("Equal");
else if(x>i)
printf("Greater than");
else
printf("Less than");
}
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Answer
Compiler error
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Categories
Easy
Medium
Hard
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Question
Which of the following utility is used for compiling and linking the program?
a. Make
b. Makefile
c. Compiler
d. linker
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Answer
a. Make
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Categories
Easy
Medium
Hard
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Question Would the following program give a
compilation error or warning?
#include<stdio.h>
int main()
{
char a[]=”sunstroke”; a. Yes
char *p = “coldwave”; b. Noa = “coldwave”;
p = “sunstroke”;
printf(“%s %s\n”, a, p);
return 0;
}
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Answer
b. No
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Categories
Easy
Medium
Hard
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Question
Write a c program to add two
numbers without add operator?
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Answer
#include <stdio.h>
#include <conio.h>
int main(){
int a=1,b=2,c;
c=a-(-b);
printf(“%d”,c);
getch();
return 0;
}
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Categories
Easy
Medium
Hard
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Question
Which of the following function is used to copy data types other than strings from one variable to another?
a. memcpy() c. objcpy()
b. datacpy() d. strcpy()
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Answer
a. memcpy()
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Categories
Easy
Medium
Hard
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Question
Predict the output:
#include<stdio.h>
#include<string.h>
int main()
{
char s[]=”rendezvous !”;
printf(“%d\n”, *(s + strlen (s)));
return 0;
}
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Answer
Output: 0
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Categories
Easy
Medium
Hard
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QuestionWhat will be the output of the
code snippet given below?
#include<stdio.h>
Void main()
{
Char ch = ‘A’;
Printf(“%d”, ch | ‘A’ & ‘Z’);
}
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Answer
65
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Categories
Easy
Medium
Hard
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Question Consider the following program
segment: int a=35;
int *b;
b= &a;
A. b contains address of an int
B. value at address contained in b is an int.
C. b is a pointer which points in the direction of an int.
D. all of the above
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Answer
d. all of the above
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Categories
Easy
Medium
Hard
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Question
Predict the output:
#include<stdio.h>
#include<string.h>
int main()
{
printf(5 + “fascimile”);
return 0;
}
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Answer
Output: mile
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Categories
Easy
Medium
Hard
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Question
Predict the output:
#define call(x) #x
void main(){
printf("%s",call(c/c++));
}
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Answer
c/c++
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Categories
Easy
Medium
Hard
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Question
In which header file is the NULL macro defined?
a. <stdio.h>
b. <stddef.h>
c. # define
d. All of the above
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Answer
c. All of the above
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Categories
Easy
Medium
Hard
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Question
Predict the output:
#include<stdio.h>
int main()
{
int arr[12];
printf(“%d\n”, sizeof(arr));
return 0;
}
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Answer
Output: 24
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Categories
Easy
Medium
Hard
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Questionstruct marks{
int p:3;
int c:3;
int m:2;
};
void main()
{
struct marks s={2,-6,5};
printf("%d %d %d",s.p,s.c,s.m);
}
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Answer
2 2 12 2 1
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Categories
Easy
Medium
Hard
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Question
Is the NULL pointer same as an uninitialized pointer ?
a. Yes
b. No
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Answer
b. No
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Categories
Easy
Medium
Hard
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Question
What is the current version of standard for c language was approved in December 2011?
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Answer
C11
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Categories
Easy
Medium
Hard
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Question
Predict the output:
void main(){
int a=25;
clrscr();
printf("%o %x",a,a);
getch();
}
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Answer
31 19
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Categories
Easy
Medium
Hard
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Question
State true or false:
Multiplication of a pointer and an unsigned integer is allowed
a. True
b. false
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Answer
b. False
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Categories
Easy
Medium
Hard
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Question
• In which numbering system can the binary number 1011011111000101 be easily converted to?
A. Decimal system
B. Hexadecimal system
C. Octal system
D. No need to convert
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Answer
Hexadecimal system
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Categories
Easy
Medium
Hard
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Question
Predict the output:
void main()
{
int a=-12;
a=a>>3;
printf("%d",a);
}
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Answer
-2
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Categories
Easy
Medium
Hard
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Question
Does mentioning the array name gives the base address in all the contexts?
a. Yes
b. no
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Answer
b. No
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Categories
Easy
Medium
Hard
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Question
• What is the difference between #include <> and #include “ ” ?
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Answer
#include <> ---- > specifically used for built in header file.
#include ” ” ----->specifically used for user defined/created n header files.
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Categories
Easy
Medium
Hard
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Question
Assuming, integer is 2 byte, What will be the output of the program?
#include<stdio.h>
int main()
{
printf("%x\n", -1>>1);
return 0;
}
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Answer
ffff
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Categories
Easy
Medium
Hard
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Question
A pointer to a block of memory is effectively same as the array
a. True
b. False
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Answer
a. True
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Categories
Easy
Medium
Hard
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Question
Find the ERROR:
void main()
{
int const * p=5;
printf("%d",++(*p));
}
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Answer
Compiler error: Cannot modify a constant value.
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Categories
Easy
Medium
Hard
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Question
Predict the output:
#include "string.h"
void main(){
clrscr();
printf("%d%d",sizeof("string"),strlen("string");
getch();
}
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Answer
7 6
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Easy
Medium
Hard
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Question What does the following
declaration mean:
a. index of the pointer variable
b. memory location as 10
c. ptr is a pointer to an array of 10 integers
d. none of the above
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Answer
c. ptr is a pointer to an array of 10 integers
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Categories
Easy
Medium
Hard
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Question
Two different operators would always have different Associativity.
A. Yes B. No
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Answer
NO
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Categories
Easy
Medium
Hard
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QuestionPredict the output:
#include<stdio.h>
void main()
{
int i;
For(i=0;i++<10;)
Printf(“%d\n”,i);
}
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Answer
2
3
4
5
6
7
8
9
10
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Categories
Easy
Medium
Hard
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Question
Predict the output:
#include<stdio.h>
int main()
{
printf(“%c”, “abcdefgh”[4]);
return 0;
}
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Answer
0
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Categories
Easy
Medium
Hard
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Question
• Data written into a file using fwrite() can be read back using fscanf()
A. True B. False
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Answer
FALSE
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Categories
Easy
Medium
Hard
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Question
What the following code will display?
void main()
{
printf("%s",__DATE__);
}
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Answer
Current system DATE
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Categories
Easy
Medium
Hard
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Question
Predict the output:
#include<stdio.h>
int main()
{
char str[7] = “strings”;
printf(“%s\n” , str);
return 0;
}
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Answer
Output: cannot predict
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Categories
Easy
Medium
Hard
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QuestionWhat do the functions atoi()?
A. is a macro that converts integer to character.
B. It converts an integer to string
C. It converts a floating point number to string
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Answer
is a macro that converts integer to character
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Categories
Easy
Medium
Hard
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QuestionPredict the output:
void main()
{
printf("%s","c" "question" "bank");
}
A. c question bank
B. bank
C. cquestionbank
D. Compiler error
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Answer
cquestionbank
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Categories
Easy
Medium
Hard
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Question Would the following code
compile successfully?
# include<stdio.h>
int main()
{
printf(“%c”, 7[“sundaram”]);
return 0;
}
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Answer
Ans: Yes
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Categories
Easy
Medium
Hard
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Question
Give the output:
main(){#define a 50printf("%d",a);}
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Answer
50
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Categories
Easy
Medium
Hard
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QuestionGive the output:
void main(){
char *str="c-pointer";
printf("%*.*s",10,7,str);
}
(a. c-pointer
b. c-pointer
c. c-point
d. cpointer null null
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Answer
c-point
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Easy
Medium
Hard
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Question
Which of the following statements are correct about the program?
#include<stdio.h>
int main()
{
printf("%p\n", main());
return 0;
}
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Answer
It prints garbage values infinitely
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Categories
Easy
Medium
Hard
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Question• Find the error:typedef struct
{
int data;
NODEPTR link;
}*NODEPTR;
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Answer
Error: typedef cannot be used until is define
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Categories
Easy
Medium
Hard
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Question
• Predict the output:
#include<stdio.h>
void main()
{
int i;
For(i=0;++i<=10;)
Printf(“%d\n”,i);
}
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Answer
1
2
3
4
5
6
7
8
9
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Categories
Easy
Medium
Hard
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QuestionPredict the output: #include<stdio.h>
#include<string.h>
Int main
{
Char str1[]=“learn through IndiaBIX\0.com”, str2[120];
Char *p;
P=(char*)memccpy(str2,str1,’I’,strlen(str1));
*p=‘\0’;
Printf(“%s”,str2);
Return 0;}
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Answer
“learn through indi”
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Categories
Easy
Medium
Hard
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Question
State true or false:
• In place of the condition in a while loop structure there can be any other valid expression
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Answer
True
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Categories
Easy
Medium
Hard
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Question
Predict the output:
#include<stdio.h>
Void main()
{
Char arr[7]=“NETWORK”;
Printf(“%s”,arr);
}
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Answer
Garbage value
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Categories
Easy
Medium
Hard
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Question
• What does the above flowchart shows?
Initialize
Test
Body of loop
increement
Stop
START
False
True
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Answer
Shows the flowchart of FOR LOOP
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Easy
Medium
Hard
