>>33
#include<ctype.h>
int mystrlen(int*pstr){
  char*pstr_=(char*)pstr;
  int count = 0;
  for(;*pstr_;++pstr_)
    if(isspace(*pstr_)) ++count;
  return count;
}
void mystrcpy(int*pstr,int*pans){
  char*pstr_=(char*)pstr;
  char*pans_=(char*)pans;
  do if(!isdigit(*pans_))*pstr_++ = *pans_;
  while(*pans++);
}