Sorting Stack by implementing as Arrays - arrays

Question

I saw a problem on the web,i.e, I am trying to sort a stack using another reference stack in C. I tried to do it by implementing it as an array but it is not working.
(condition is that you have to use only arrays)
#include <stdio.h>
int MAXSIZE = 5;
int stack[5];
int tmpstack[5];
int tmp;
int top = -1;
int top2=-1;
int isempty(int A[],int B) {
if(B == -1)
return 1;
else
return 0;
}
int isfull(int A[],int B) {
if(B == MAXSIZE)
return 1;
else
return 0;
}
int pop(int A[],int B) {
int data;
if(!isempty(A,B)) {
data = A[B];
B = B - 1;
return data;
}
else {
printf("Could not retrieve data, Stack is empty.\n");
}
}
int push(int data,int A[],int B) {
if(!isfull(A,B)) {
B = B + 1;
A[B] = data;
}
else {
printf("Could not insert data, Stack is full.\n");
}
}
int sortStack(int stack[])
{
int tmpStack[MAXSIZE];
while (!isempty(stack,top))
{
int tmp = stack[top];
pop(stack,top);
while (!isempty(tmpstack,top2) && tmpstack[top2] > tmp)
{
push(pop(tmpstack,top2),stack,top);
}
push(tmp,tmpstack,top2);
}
return 0;
}
int main() {
int n ,a;
n=5;
for(int i = 0;i < n ; ++i){
scanf("%d",&a);
push(a,stack,top);
}
sortStack(stack);
while (!isempty(tmpstack,top2))
{
printf("%d ",tmpstack[top2]);
pop(tmpstack,top2);
}
return 0;
}
What I did here is that I made similar functions in arrays which we used in stacks only and we are supposed to use them only for implementing our stacks.