Correct escape sequence in printf statement

it is given that we have to check what happens when we put a incorrect escape sequence like \c given in the question. Previous code had "hello, world\\c" has the printf argument which just prints 'hello world\c' instead of checking what error does it show for entering incorrect escape sequence.
I have also commented the error produced as per the GCC compiler

Author: kkaname

chapter_1/exercise_1_02/printf_argument.c

@@ -1,6 +1,6 @@
 #include <stdio.h>
 
 int main(void) {
-    printf("hello, world\\c");
+    printf("hello, world\c");     /*prints warning: unknown escape sequence '\c' */
     return 0;
 }