Consider the C program below. #include <stdio.h> int *A, stkTop; int…

Consider the C program below.

#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));
}

The value printed by the above program is __________.