c语言字符串操作

//去除重复的字符，返回不重复的

char* mystrcpy(char* dest, const char* src)
{
char* tmp = dest;
while ((*tmp++= *src) != '\0')
{
src=src+2;
}
return dest;
}
int main()
{
char a[50], c[]="aaddmmiigghhjj";
mystrcpy(a,c);
printf("%s\n",a);
return 0;
}