Implement Stack Using Array with Push and Pop Operations

Code

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

#define MAX 10

/*
use input n as number of iterations/lines to parse
parse each line for command and integer
whether push/pop, perform each action
do error checking for stack overflow/underflow
*/

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

void push(int data){
    if (top == MAX-1){
        printf("Stack Overflow\n");
        return;
    }
    top++;
    stack[top] = data;
}

void pop(){
   if (top == -1){
    printf("Stack Underflow\n");
    return;
   }
   printf("%d\n", stack[top]);
   top--;
}

void process_stack(int n) {
    char command[5];
    int data;

    while(n--){
        scanf("%s", command);
        scanf("%d", &data);
        if (strcmp(command, "push") == 0){
            push(data);
        }
        else if (strcmp(command, "pop") == 0){
            pop();
        }
    }
    
}

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

    process_stack(n);
    return 0;
}

Solving Approach