Same Int Param

cppParamSameInt.cpp

#include <iostream>
#include <type_traits>

template<
  int A,
  int B,
bool isSame = ( A == B ),
  typename TSfinae = void>
struct S;

template< int C >
struct S<
  C,
  C,
true>
{
  void operator()(){
    std::cout << "same" << std::endl;
  }
};

template< int C  >
struct S<
  1,
C, false>
{
  
  void operator()(){
    std::cout << "1" << std::endl;
  }
};

template< int C >
struct S<
  C,
1,
false >
{
  void operator()(){
    std::cout << "2" << std::endl;
  }
};

S<1,2> s1;
S<1,1> s2;
S<7,1> s3;

int main()
{
    s1();
    s2();
    s3();
    return 0;
}