GATE 2018
Consider the following C program:
c
The output of this program is _______
#include <stdio.h>
int counter = 0;
int calc(int a, int b) {
int c;
counter++;
if (b == 3) return (a * a * a);
else {
c = calc(a, b / 3);
return (c * c * c);
}
}
int main() {
calc(4, 81);
printf("%d", counter);
return 0;
}