Language: C C++ D Haskell Lua OCaml PHP Perl Plain Text Python Ruby Scheme Tcl char *itoa( const int num ,char* buf, const int ignore ) { const char table[] = "0123456789"; char *p = buf; int tmp; for(tmp=num;tmp>0;tmp /= 10) *p++; *p='\0'; for(tmp=num;tmp>0;tmp /= 10) *--p=table[tmp%10]; return buf; } int main() { char buf[99]; int aho; for(aho=1; aho<50; aho++){ if( aho%3==0 || aho%5==0 || strchr(itoa(aho,buf,10),'3')) printf("%d\n",aho); } return 0; } Private [?] Run code