<code c>#include <stdio.h>

int howManyTimes() {
    static int counter = 0;

    return ++counter;
}

int main() {
    printf("Function has been called %d times\n", howManyTimes());
    printf("Function has been called %d times\n", howManyTimes());
    printf("Function has been called %d times\n", howManyTimes());
    printf("Function has been called %d times\n", howManyTimes());
    printf("Function has been called %d times\n", howManyTimes());

    return 0;
}</code>