Detect the size of an integer

[aruljothi]

#include <stdio.h>

template< typename IntType >
int numberOfBits() {
  IntType newValue = 1;
  IntType oldValue = 0;
  int numBits = 0;
  while(oldValue != newValue) {
    ++numBits;
    oldValue = newValue;
    newValue = (newValue << 1) + 1;
  }
  return numBits;
}

int main(int argc, char* argv[]) {
  printf("sizeof(int)  : %d\n", sizeof(int) * ;
  printf("size of &ltint>: %d\n", numberOfBits<int>());
  printf("\n");
  printf("sizeof(unsigned int)  : %d\n", sizeof(unsigned int) * ;
  printf("size of &ltunsigned int>: %d\n", numberOfBits<unsigned int>());
  printf("\n");
  printf("sizeof(short)  : %d\n", sizeof(short) * ;
  printf("size of &ltshort>: %d\n", numberOfBits<short>());
  return 0;
}