The DO keyword.

The do keyword performs a simular function to while. Basicaly, it repeats a block of statements. Here is an example of the syntax:

        main()
        {
          int i=5;

          do
          {
            printf(" i is %d\n", i);
          }
          while(--i);
        }

The program result will look like this:

 		i is 5
 		i is 4
 		i is 3
 		i is 2
 		i is 1

The main difference between do and while is the time that expression is evaluated.

do performs the first test AFTER the first iteration.
while performs the first test BEFORE the first iteration.

Examples:

Basic do.

The DO keyword.

Examples:

See also: