-
Consider the C program below.
#include
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)+stkFun(1,0);
}
The value printed by the above program is ______.
-
- 5
- 15
- 21
- 51
Correct Option: B
The code is pushing 5 and 10 on stack and then popping the top two elements and printing their sum.
