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];
    char cmd[10];
    int val;
    int ind = -1;
    
    for(int i = 0;i<n;i++){

        scanf("%s",cmd);
 
        if(strcmp(cmd, "push") == 0){

            if(ind == MAX-1){

                printf("Stack Overflow\n");
                printf("%d",10);

            } else {

                scanf("%d",&val);
                stack[++ind] = val;

            }

        } else if(strcmp(cmd, "pop") == 0){

            if(ind == -1){

                printf("Stack Underflow\n");

            } else {

                printf("%d\n",stack[ind--]);

            }

            

        }

    }

}

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

    process_stack(n);
    return 0;
}