#include <iostream>
int main()
{
int a, b, c;
std::cout << "Enter 3 Numbers: ";
std::cin >> a >> b >> c;
std::cout << "\n";
if (a==b && b==c)
std::cout << "All numbers are the same";
if ((a==b && a!=c) || (a==c && a!=b) || (b==c &&b!=a))
std::cout << "Two numbers are similar";
if ((a!=b) && (a!=c) && (b!=c))
std::cout << 0;
return 0;
}
Объяснение: