8/11/2019 Problem Exercises Chapter 01

1/12

1.

Page 55: Exercise 23. Write a program that asks the user to enter two numbers

and prints the sum, product, difference, and quotient of the two numbers.

#includeusingstd::cout;usingstd::endl;usingstd::cin;

intmain()

{intnum1, num2; // declare variables

cout > num1 >> num2; // read values from keyboard

// output the results

cout

8/11/2019 Problem Exercises Chapter 01

2/12

2.

Page 55: Exercise 24. Write a program that prints the numbers 1 to 4 on the

same line with each pair of adjacent numbers separated by one space. Write

the program in each of the following ways:a)Using one output statement with one stream insertion operator.

b)Using one output statement with four stream insertion operators.

c)Using four output statements.

#includeusingstd::cout;

usingstd::endl;

intmain (){

// Part A: Using one output statement// with one stream insertion operatorcout

8/11/2019 Problem Exercises Chapter 01

3/12

3.

Page 55: Exercise 25. Write a program that asks the user to enter two integers,

and then prints the larger number followed by the words "is larger." If the

numbers are equal, print the message "These numbers are equal."

#includeusingstd::cout;usingstd::endl;usingstd::cin;

intmain(){

intnum1, num2; // declare variables

cout > num1 >> num2; // read values from keyboard

// Compares if values of "num1" and "num2" are equalif( num1 == num2 ) // If condition is true, then

cout

8/11/2019 Problem Exercises Chapter 01

4/12

4.

Page 55: Exercise 26. Write a program that inputs three integers from the

keyboard and prints the sum, average, product, smallest and largest of these

numbers.#includeusingstd::cout;usingstd::cin;usingstd::endl;

intmain() {intnum1,num2,num3,smallest,largest; //declare variables

cout > num1 >> num2 >> num3; //read values from keyboard

largest = num1; // assume "num1" is the largestif( num2 > largest ) //is "num2" larger than "largest"?

largest = num2; // then "num2" is the largest

if( num3 > largest ) //is "num3" larger than "largest"?largest = num3; // then "num3" is the largest

smallest = num1; // assume "num1" is the smallestif( num2 < smallest ) //is "num2" smaller than smallest?

smallest = num2; // then "num2" is the smallestif( num3 < smallest ) //is "num3" smaller than smallest?

smallest = num3; // then "num3" is the smallest

// output the resultscout

8/11/2019 Problem Exercises Chapter 01

5/12

5.

Page 56: Exercise 28. Write a program that prints a box, an oval, an arrow and

a diamond.

#includeusingstd::cout;usingstd::endl;

intmain(){

// output the resultscout

8/11/2019 Problem Exercises Chapter 01

6/12

6.

Page 56: Exercise 30. Write a program that reads in five integers from the

keyboard and determines and prints the largest and the smallest integers in the

group. Use only the programming techniques you learned in this chapter.#includeusingstd::cout;usingstd::endl;usingstd::cin;

intmain(){

// declare variablesintnum1, num2, num3, num4, num5, largest, smallest;

cout > num1 >> num2 >> num3 >> num4 >> num5; // input

largest = num1; // assume that "num1" is the largest

smallest = num1; // assume that "num1" is the smallest

if( num1 > largest ) //is "num1" larger than "largest"?largest = num1; // then "num1" is the largest

if( num2 > largest ) //is "num2" larger than "largest"?largest = num2; // then "num2" is the largest

if( num3 > largest )//

largest = num3;if( num4 > largest )

largest = num4;if( num5 > largest )

largest = num5;

if( num1 < smallest )//is "num1" smaller than smallest?

smallest = num1; // then "num1" is the smallestif( num2 < smallest )//is "num2" smaller than smallest?

smallest = num2; // then "num2" is the smallestif( num3 < smallest )//

smallest = num3;if( num4 < smallest )

smallest = num4;

if( num5 < smallest )smallest = num5;

8/11/2019 Problem Exercises Chapter 01

7/12

// output the resultscout

8/11/2019 Problem Exercises Chapter 01

8/12

7.

Page 56: Exercise 31. Write a program that reads an integer and determines

and prints whether it is odd or even. (Hint: Use the modulus operator. An even

number is a multiple of two. Any multiple of two leaves a remainder of zerowhen divided by 2.)

#includeusingstd::cout;usingstd::endl;usingstd::cin;

intmain(){

intnum; // declare variable

cout > num; // read value from keyboard

if( (num % 2) == 0 ) // If "num" is even, thencout

8/11/2019 Problem Exercises Chapter 01

9/12

8.

Page 56: Exercise 32. Write a program that reads in two integers and

determines and prints if the first is a multiple of the second. (Hint: Use the

modulus operator.)

#includeusingstd::cout;usingstd::endl;usingstd::cin;

intmain(){intnum1, num2; // declare variables

cout > num1 >> num2; // read values from keyboard

// If "num1" is a multiple of "num2", thenif( (num1 % num2) == 0 )

cout

8/11/2019 Problem Exercises Chapter 01

10/12

9.

Page 57: Exercise 36. Write a program that inputs a five-digit number numand

prints nums digits separated from one another by three spaces each. For

example, if the user types in 42339 the program should print: 4 2 3 3 9Hint: Use the integer division and modulus operators.

#includeusingstd::cout;usingstd::endl;usingstd::cin;

intmain(){

intnum; // declare variable

cout > num; // read values from keyboard

cout

8/11/2019 Problem Exercises Chapter 01

11/12

10.

Page 57: Exercise 37. Using only the techniques you learned in this chapter,

write a program that calculates the squares and cubes of the numbers from 0 to

10 and uses tabs to print the following table of values:number square cube

0 0 0

1 1 1

2 4 8

3 9 27

4 16 64

5 25 1256 36 216

7 49 343

8 64 512

9 81 729

10 100 1000

#includeusingstd::cout;usingstd::endl;

intmain(){

intnum; // declare variable

num = 0; // Initialize "num" to value 0cout

8/11/2019 Problem Exercises Chapter 01

12/12

num = num + 1;cout