puts() function is a simplified version of the printf() function. : puts « stdio.h « C Tutorial

1. C Tutorial
2. stdio.h
3. puts

1. puts() displays a string of text without all printf()'s formatting magic.
2. puts() always displays the newline character at the end of its output.

#include <stdio.h>
 
int main()
{
    puts("error.");
    return(0);
}

error.