Page 286 - Computer_Science_F5

Output:

FOR ONLINE READING ONLY

Figure 4.56: Output of the program Chapter Four: Object oriented programming with C++

Function that does not return value (Void function)
A void function is a function that does not return any value. To call such a function,
you will define function name without data type or variable. Program Example 4.28
demonstrates a C++ program that changes marks to grade using void function. The
output is shown in Figure 4.57.

Program Example 4.28:
Changing marks grade using void function

#include<iostream>
using namespace std;
void grade(double marks)
{
if (marks>80)
cout<<’A’;
else if (marks>60)
cout<<’B’;
else if (marks>40)
cout<<’C’;
else if (marks>20)
cout<<’D’;
else
cout<<’F’;
}
int main()
{
cout<<”Enter marks: “;
double marks;
cin>>marks;
cout<<”The grade is “;
grade(marks); // function call
return 0;
}

Output:

Figure 4.57: Output of the program

277
Student’s Book Form Five

Computer Science Form 5.indd 277 23/07/2024 12:34