#include "stdio.h"
#include <stdlib.h>
#include <iostream>
#include <math.h>
using namespace std;
int Prime(int number){
for(int i = 2; i <= sqrt(number); i++ )
if(number%i == 0 )
return 0;
return 1;
}
void PrimeFactor(int number){
for(int i = 2; i <= number; i++)
if(number%i == 0 && Prime(i))
{
cout << i;
if(!Prime(number))
cout << '*';
number = number/i;
PrimeFactor(number);
return ; //一定要加,否则第一次分解得到的数会因为for循环再次被分解
}
}
int main(){
int number;
cout << "please key in the number:" << endl;
cin >> number;
cout << "the result is :number = ";
PrimeFactor(number);
cout << endl;
return 1;
}