GATE 2015 · Set-2
Consider the C program below:
c
The value printed by the above program is
#include <stdio.h>
int *A, stkTop;
int stkFunc(int opcode, int val) {
static int size = 0, stkTop = 0;
switch (opcode) {
case -1: size = val; break;
case 0: if (stkTop < size) A[stkTop++] = val; break;
default: if (stkTop) return A[--stkTop];
}
return -1;
}
int main() {
int B[20]; A = B; stkTop = -1;
stkFunc(-1, 10);
stkFunc(0, 5);
stkFunc(0, 10);
printf("%d\n", stkFunc(1, 0) + stkFunc(1, 0));
}