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];
    int top = -1;

    char cmd[10];
    int val;

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

    }
}

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

    process_stack(n);
    return 0;
}

Solving Approach