int toascii (int c);

a macro thats convert c into ascii chars

#include <iostream> /* including standard library */
#include <cctype> 
 
using namespace std;
int main( void ) 
 { 
   int i; 
   for (i=0x2a; i<=0x42; i++) { 
       cout << i << " is " << static_cast<char>(toascii(i)) << endl;
   } 
 
 }

  output
  0x2a is *
  0x2b is +
  0x2c is ,
  0x2d is -
  0x2e is .
  0x2f is /
  0x30 is 0
  0x31 is 1
  0x32 is 2
  0x33 is 3
  and so on, and so on