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condition is tested. For example, when The following C++ Program Example
you look for your favorite food at the 4.25 demonstrates the use of do…while
restaurant. First, you will go, and if the loop. The output is shown in Figure 4.49.
food is attractive, you will continue to
go. Otherwise, you will quit and go to Program Example 4.25: Chapter Four: Object oriented programming with C++
FOR ONLINE READING ONLY
another restaurant. The syntax of the do- The use of do-while loop
while loop is given as:
do {
#include<iostream>
// The statement will be executed
once even if the condition is using namespace std;
false. int main()
Statement(s); {

} int sum = 0;
int i = 0;
while(loop condition);
do
Figure 4.48 shows the execution {
flowchart of the do-while loop. sum+=i;
cout<<”Enter an integer: “;
cin>>i;
}
while(i!=0);
cout<<”The sum is “<<sum<<endl;
Statement (s) return 0;
(loop body)
True }
Output:

Loop
condition

False

Figure 4.48: do-while loop flowchart Figure 4.49: Output of the program

271
Student’s Book Form Five

Computer Science Form 5.indd 271 23/07/2024 12:34