printf - How to print out a slash (/ or ) in C?

Question

I know this is a very silly and simple question but I've been trying to print out an image of a robot that should output this:

+----------+
|          |
| /    / |
| /    / |
|          |
|  [-=-=-] |
+----------+

The part I'm stuck on is printing out the eyes. originally I coded:

printf("| /  / |");
printf("| /  / |");

but an error showed, so I remembered that you need to double slash so:

printf("| /\  /\ |");
printf("| \/  \/ |");

but an error saying implicit declaration of function printf is showing even after that?! I don't understand the error. Can someone explain how to fix this please?

Answer 1

You don't need to escape forward slash.

This works for me:

#include <stdio.h>

int main()
{
  printf("| /\  /\ |");
  printf("| \/  \/ |");
  return 0;
}