strcat
strcat or strcpy is used to connect two string
like in here in this example the output will be these strings are concatenated.
#include <stdio.h>
#include <string.h>
int main ()
{
char str[80];
strcpy (str,"these ");
strcat (str,"strings ");
strcat (str,"are ");
strcat (str,"concatenated.");
puts (str);
return 0;
}