Help me in solving CLB002 problem

help
,
1

My issue

Why I get errors

My code

#include <stdio.h>
#include <conio.h>
int main()
{
  clrscr();
  printf("%d", 12);
  getch();
}

Learning course: Programming and Problem solving using C
Problem Link: https://www.codechef.com/learn/course/ciet-programming-c/CIETPC01/problems/CLB002