Question

How to check whether a float number is even or odd in C++

Answer 1

#include <iostream>
#include <sstream>
 
using namespace std;

bool float_even(float f) {
    ostringstream os;
      
    os << f;
      
    string s = os.str();
     
    int n = s[s.size() - 1] - '0';
    
    return n % 2 == 0;
}
 
int main() {
    float f = 23.8713;
  
    if (float_even(f))
        cout << "even" << endl;
    else
        cout << "odd" << endl;
        
        
    f = 23.8716;
  
    if (float_even(f))
        cout << "even" << endl;
    else
        cout << "odd" << endl;
}

 
 
 
/*
run:

odd
even
 
*/

 

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