Assume that the following variables have been defined in a program: int x = 10; int y = 20; int z = 30; Write a cout statement that displays the sum of the variables x, y, and z.

The program to this question as follows:

Program:

#include / /defining header file

using namespace std;

int main () / /defining main method

{

int x = 10, y = 20, z = 30; / /defining integer variable and assigning the value

int sum; //defining integer variable sum

sum = x+y+z; //adding value, that holds by sum variable

cout<<"sum: "<
return 0;

}

Output:

sum: 60

Explanation:

Description of the above code as follows:

In the above code three integer variable "x, y, and z" is declared, that initialized with the value, that is 10, 20, and 30. In the next line, another variable "sum" is declared, that holds the above variable value and add the number. Then the print function "cout" is used, which prints sum variable value.