Đẩy vào

#include <stdio.h>
#include <string.h>
#include "stack.h"

int main() {
    Stack stack;
    Stack_init(&stack);
    char cmd[16];
    while (scanf("%15s", cmd) == 1) {
        if (strcmp(cmd, "push") == 0) {
            int x;
            scanf("%d", &x);
            Stack_push(&stack, x);
        }
    }
    for (int i = 0; i < stack.size; i++) {
        printf("%d\n", stack.elements[i]);
    }
    return 0;
}