Question

How to check whether a given number is a pronic number in C#

Answer 1

using System;

// A pronic number is a number which is the product of two consecutive integers
// 42 = 6 * 7 -> yes 6 and 7 is consecutive integers
// 45 = 5 * 9 -> no 5 and 9 is not consecutive integers

class Program
{
    static bool isPronicNumber(int num) {  
        for (int i = 1; i <= num; i++) {  
            if ((i * (i + 1)) == num) {  
                return true;
            }  
        }  
        return false;  
    } 
    static void Main() {
        int num = 42;
     
        if (isPronicNumber(num))  
            Console.Write("yes");  
        else
            Console.Write("no");  
    }
}


 
 
 
/*
run:
 
yes
 
*/

 

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