C do Keyword
Example
The following loop will always be executed at least once, even if the condition is false, because the code block is executed before the condition is tested:
int i = 0;
do {
printf("%d\n", i);
i++;
}
while (i < 5);
Try it Yourself »
Definition and Usage
The do
keyword is used together with while
to create a do/while loop.
The while
loop loops through a block of code as long as a specified condition is true.
The do/while
loop is a variant of the while
loop. This loop will execute the code block once, before checking if the condition is true, then it will repeat the loop as long as the condition is true.
Note: Do not forget to increase the variable used in the condition, otherwise the loop will never end!
Related Pages
Read more about the do/while loop in our C Do/While Loop Tutorial.