sol2.c File Reference

Problem 3 solution More...

#include <stdio.h>

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Functions
int	main ()
	Main function. More...

Detailed Description

Problem 3 solution

Problem:

The prime factors of 13195 are 5,7,13 and 29. What is the largest prime factor of a given number N? e.g. for 10, largest prime factor = 5. For 17, largest prime factor = 17.

Function Documentation

main()

int main

(

void

)

Main function.

{
    int n = 0;
    scanf("%d", &n);
    int prime = 1;
    int i = 2;
    while (i * i <= n)
    {
        while (n % i == 0)
        {
            prime = i;
            n /= i;
        }
        i += 1;
    }
    if (n > 1)
        prime = n;
    printf("%d\n", prime);
    return 0;
}

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