Implement Stack Using Array with Push and Pop Operations

Code

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

#define MAX 10

void process_stack(int n) 
{
    int stack[MAX];
    int top = -1;

    char cmd[10];
    int val;

    while(n)
    {
        scanf("%s", cmd);
        if(strcmp(cmd, "push") == 0)
        {
            scanf("%d", &val);
            if(top >= MAX-1)
            {
                printf("Stack Overflow\n");
            }
            else
            {
                stack[++top] = val;
            }
        }
        else if(strcmp(cmd, "pop") == 0)
        {
            if(top == -1)
            {
                printf("Stack Underflow\n");
            }
            else{
                printf("%d\n", stack[top--]);
            }
        }
        n--;
    }
}

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

    process_stack(n);
    return 0;
}

Solving Approach