A C-test program for https://stackoverflow.com/questions/69442861/using-a-function-to-calculate-water-bill-in-c/69443150\?noredirect\=1\#comment122781803_69443150

Test.c

#include <stdio.h>
#include <stdlib.h>

int main() {
    int num;
    char test;
    while (fscanf(stdin, " %c%d", &test, &num) == 2)
        printf("%c, %d\n", test, num);
    return 1;
}