987 B
987 B
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do while loop |
Do While Loop
The do while loop
is almost the same as the while loop. The do while loop
has the following form:
do
{
// do something;
} while(expression);
Note: Remember to use a semicolon ';' at the end of the condition.
Details about do-while loop
The do-while loop is used whenever you are sure that a particular process(within the loop) has to be performed at least once. It has many advantages like not initialising the checking variable(eg- char addmore='Y') etc. The semicolon at the end of while is a must.
Do something first and then test if we have to continue. The result is that the do block runs at least once. (Because the expression test comes afterward). Take a look at an example:
#include <iostream>
using namespace std;
int main()
{
int counter, howmuch;
cin >> howmuch;
counter = 0;
do
{
counter++;
cout << counter << '\n';
}
while ( counter < howmuch);
return 0;
}