Help me in solving SYNN3 problem

Problem Link: CodeChef: Practical coding for everyone
Learning course: Learn C

My code

#include <stdio.h>

int main() {
 printf("%d", 3 + 4_ );
  printf("%d", 2 + 1);
  return 0;
}

My issue

You have an extra _ (underscore) after 3 + 4. Remove that and your code will work.