88. Implement Stack Using Array with Push and Pop Operations

#include <stdio.h>
#include <stdint.h>
#include <string.h>

#define MAX 10


void process_stack(int n) {
    int32_t stack[MAX];
    int32_t top=-1;
    char op[8];
    int32_t val;
    for(int i=0;i<n;i++)
    {
        scanf("%s",op);
        if(strcmp(op,"push")==0)
        {
            scanf("%d", &val);
            if(top==MAX-1)
            {
                printf("Stack Overflow\n");
            }
            else{
                stack[++top]=val;
            }
        }
        else
        {
            if(top==-1)
            {
                printf("Stack Underflow\n");
            }
            else{
                printf("%d\n",stack[top--]);
            }
        }
    }
}

int main() {
    int n;
    scanf("%d", &n);
    getchar(); // Consume newline after number

    process_stack(n);
    return 0;
}