Implement Stack Using Array with Push and Pop Operations

Code

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

#define MAX 10
int stack[MAX];
int top=-1;
void push(int num){
    if(top==MAX-1){
        printf("Stack Overflow\n");
    }
    else{
        stack[++top]=num;
    }
}

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

void process_stack(int n) {
    // Your logic here
    int x;
    char cmd[20];
    for(int i=0;i<n;i++){
        scanf("%s",&cmd);
        if(strcmp(cmd,"push")==0){
            scanf("%d",&x);
            push(x);
        }
        else if(strcmp(cmd,"pop")==0){
            pop();
        }
    }
}

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

    process_stack(n);
    return 0;
}

Solving Approach