Chapter 7, Problem 4RQE

Statement-1:

Program:

//Header file

#include <iostream>

using namespace std;

//Main function

int main()

{

//Declare the array variable and initialize it

int values[5]={4,7,6,8,2};

//Display the subscript of the array

cout << values[4] << endl;

//Pause the system

system("pause");

//Return the statement

return 0;

}

Explanation:

In the above code, the array contains 5 values in it and the subscript of the array starts from 0 to 4.

This can be written as,

values[0]= 4;

values[1]= 7;

values[2]= 6;

values[3]= 8;

values[4]= 2;

Thus, the subscript of the array of values[4] contains the value “2”.

Sample Output:

2

Press any key to continue . . .

Program Description Answer

Therefore, the program displays the value “2” in the output screen for statement1.

Statement – 2:

Program:

//Header file

#include <iostream>

using namespace std;

//Main function

int main()

{

//Declare the array variable and initialize it

int values[5]={4,7,6,8,2};

//Display the subscript of array

cout << values[2]+values[3] << endl;

//Pause the system

system("pause");

//Return statement

return 0;

}

Explanation:

In the above code, the array contains 5 values in it and the subscript of the array starts from 0 to 4.

This can be written as,

values[0]= 4;

values[1]= 7;

values[2]= 6;

values[3]= 8;

values[4]= 2;

Thus, the subscript of the array of values[2] contains the value “6” and the subscript of the array of values[3] contains the value “8”.

Sample Output:

14

Press any key to continue . . .

Program Description Answer

Therefore, after adding these two values, the program displays the value “14” in the output screen for statement2.

Statement – 3:

Program:

//Header file

#include <iostream>

using namespace std;

//Main function

int main()

{

//Declare the array variable and initialize it

int values[5]={4,7,6,8,2};

//Display the subscript of array

cout << ++values[1] << endl;

//Pause the system

system("pause");

//Return statement

return 0;

}

Explanation:

In the above code, the array contains 5 values in it and the subscript of the array starts from 0 to 4.

This can be written as,

values[0]= 4;

values[1]= 7;

values[2]= 6;

values[3]= 8;

values[4]= 2;

In the highlighted statement, the subscript of the array of values[1] contains the value “7” and it is pre-incremented by 1.

Sample Output:

8

Press any key to continue . . .

Program Description Answer

Therefore, the program displays the value “8” in the output screen for statement3.