Question

How to check if the last digit of a float number in odd or even in C++

Answer 1

#include <iostream>

using namespace std;

bool last_digit_even(string s) { 
    if ((s[s.length() - 1] - '0') % 2 == 0) 
          return true; 

    return false; 
} 

int main() 
{
    string s = "3.14"; 
    if (last_digit_even(s)) 
        cout << "Even" << endl; 
    else
        cout << "Odd" << endl; 
        
    
    s = " 3.14159"; 
    if (last_digit_even(s)) 
        cout << "Even" << endl;  
    else
        cout << "Odd" << endl;  
}



/*
run:

Even
Odd

*/

 

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