Implement String Functions, strlen (), strcpy (), strcmp (), strcat ()

Implement String Functions, strlen (), strcpy (), strcmp (), strcat ()

1#include <stdio.h>2#include <stdlib.h>3 4 intMy_strlen (Char*str);5 Char*my_strcpy (Char*dest,Char*src);6 Char*my_strcat (Char*dest,Char*src);7 intMY_STRCMP (Char*STR1,Char*str2);8 9 intMain ()Ten { One     Chardest[ +] ="Chen"; A     Charsrc[ +] ="Chengha"; -     intRes; -     //printf ("strlen (%s) =%d\n", Str,my_strlen (str)); theres =my_strcmp (DEST,SRC); -printf"res =%d\n", res); -     //puts (dest); -System"Pause"); +     return 0; - } +  A intMy_strlen (Char*str) at { -     intLen =0; -      while(*str! =' /') -     { -len++; -str++; in     } -     returnLen; to } +  - Char*my_strcpy (Char*dest,Char*src) the { *     Char*address =dest; $      while((*dest = *src)! =' /')Panax Notoginseng     { -dest++; theSrc++; +     } A     returnaddress; the } +  - Char*my_strcat (Char*dest,Char*src) $ { $     Char*address =dest; -      while(*dest! =' /') -dest++; the      while((*dest = *src)! =' /') -     {Wuyidest++; theSrc++; -     } Wu     returnaddress; - } About  $ intMY_STRCMP (Char*STR1,Char*str2) - { -      for(; *str1 = = *str2; str1++, str2++) -         if(*STR1 = =' /') A             return 0; +     return*STR1-*str2; the}

Implement String Functions, strlen (), strcpy (), strcmp (), strcat ()