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) {
    // Your logic here
    int stack[MAX];
    char cmd[5];
    int val;

    int top = 0;    //points to current free slot

    for(int i=0; i<n; i++)
    {
        scanf("%s", cmd);

        if(strcmp(cmd, "push") == 0)
        {
            scanf("%d", &val);

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

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

    process_stack(n);
    return 0;
}

Solving Approach