finding an integer in an integer

[Unregistered]

is there any way to search for the occurence of an integer inside an iteger? ie. to try to find '2' in '12' ?

Thanks

[ihsir]

you could copy that integer to a char and then search.

I dont know of any direct method.

[Shiro]

You could use itoa to convert the integer to a string and then search for the digit. Ofcourse also the digit must be converted to a string.

[Unregistered]

Thanks for that, Shiro, but would you be able to give me a code example of how to use that function and then search for it? Thanks. I really apprieciate it, mate.

Thanks

[Prelude]

#include <iostream>
#include <sstream>
const char match = '2';

int main ( void )
{
  int x = 12, count = 0;
  std::ostringstream oss;
  oss<<x;
  std::string s = oss.str();
  for ( int i = 0; i < s.length(); i++ )
    if ( s[i] == match ) count++;
  std::cout<< count <<" digit(s) match \'"<< match <<"\'\n";
  return 0;
}

or

#include <iostream>
const char match = '2';

int main ( void )
{
  int x = 12, count = 0;
  char buf[BUFSIZ] = {'\0'};
  sprintf ( buf, "%d", x );
  for ( int i = 0; i < strlen ( buf ); i++ )
    if ( buf[i] == match ) count++;
  std::cout<< count <<" digit(s) match \'"<< match <<"\'\n";
  return 0;
}

-Prelude

[*ClownPimp*]

or you could use the direct method...

int main()
{
   int x = 1232, count = 0, target = 2;
   while (x) {
       if (x % 10 == target)
           count++;
       x /= 10;
   }
   ...
}