Strings: Copying

19 Years Ago Dave Sinkula 0 185 Views

How might I write an implementation in C of the standard library function strcpy ? Here's how I might.

#include <stdio.h>

char *mystrcpy(char *dst, const char *src)
{
   char *start = dst;
   do {
      *dst++ = *src;
   } while ( *src++ );
   return start;
}

int main (void)
{
   char text[12];
   puts(mystrcpy(text, "Hello world"));
   return 0;
}

/* my output
Hello world
*/

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