strcpy.c

if (self = [super init]) {
}
return self;

// ->

self = [super init];
if (self) {
}
return self;

////

strcpy(char *s1, const char *s2) {
  char *s = s1;
  while ((*s++ = *s2++) != 0)
    ;
  return (s1);
}

// ->

strcpy(char *s1, const char *s2) {
  char *s = s1;
  while (*s2 != 0) {
    *s = *s2;
    *s2++;
    *s++;
  }
  return (s1);
}