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) {
    // Your logic here
    int stack[MAX];
    int head = -1;
    int val;
    char cmd[10];
    
    for(int i = 0; i< n; i++)
    {
        scanf("%s", cmd);
        if(strcmp(cmd, "push") == 0)
        {
            scanf("%d", &val);
            if(head < MAX - 1)
            {
                head++;
                stack[head] = val;
                // printf("%d\n", val);
            }
            else
            {
                printf("Stack Overflow\n");
            }
        }
        else if(strcmp(cmd, "pop") == 0)
        {
            if(head == -1)
            {
                printf("Stack Underflow\n");
            }
            else
            {
                printf("%d\n", stack[head]);
                head--;
            }
        }
    }
}

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

    process_stack(n);
    return 0;
}