Implement Stack Using Array with Push and Pop Operations

Code

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

#define MAX 10

int stack[MAX];
int top = -1;

void process_stack(int n) {
    // Your logic here
    for(int i = 0; i < n; i++)
    {
        char command[10];
        scanf("%s", command);

        if(strcmp(command, "pop") == 0)
        {
            if(top < 0)
            {
                printf("Stack Underflow\n");
            }
            else
            {
                printf("%d\n", stack[top]);
                top--;
            }
        }
        else
        {
            int value;
            scanf("%d", &value);
            if(top >= MAX - 1)
            {
                printf("Stack Overflow\n");
            }
            else
            {
                top++;
                stack[top] = value;
            }
        }
    }
}

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

    process_stack(n);
    return 0;
}

Solving Approach