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], data;
    int top = -1;
    char command[20];
    
    // Duyet Stack
    for(int i = 0; i < n; i++){
        scanf("%s", command);
        //PUSH
        if(strcmp(command, "push") == 0){
            scanf("%d", &data);
            if(top == MAX-1) printf("Stack Overflow\n");
            else{
                top++;
                stack[top] = data;
            }
        }
        else if(strcmp(command, "pop") == 0){
            if(top == -1) printf("Stack Underflow\n");
            else{
                printf("%d\n", stack[top]);
                top--;
            }
        }
    }
}

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

    process_stack(n);
    return 0;
}

Solving Approach

 

 

 

Upvote
Downvote
Loading...

Input

5 push 10 push 20 pop pop pop

Expected Output

20 10 Stack Underflow