cppreference.com > Standard C String and Character > strcat strcat Syntax:
      #include <string.h>
      char *strcat( char *str1, const char *str2 );
The strcat() function concatenates str2 onto the end of str1, and returns str1. For example:
       printf( "Enter your name: " );
       scanf( "%s", name );
       title = strcat( name, " the Great" );
       printf( "Hello, %s\n", title );
Related topics: strchr strcmp strcpy strncat