Doing something n times in C with while and decrement
Here’s the standard way to do_something() n times in C:
for (int i = 0; i < n; i++) {
do_something();
}
But if you don’t use n after the loop, and you don’t use i in the loop body, this is a simpler way:
while (n--) {
do_something();
}
Full example:
#include <stdio.h>
int main(void) {
int n = 3;
while (n--) {
printf("hey\n");
}
return 0;
}
which prints:
% ./a.out
hey
hey
hey
Tagged . All content copyright James Fisher 2017. This post is not associated with my employer.
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