Code:#include "stdafx.h"
#include <iostream>
using namespace std;
int multiply()
{
int one3,two3,three3,four3;
int e3,f3, x;
cout<<"Input the numerator and denominator of a fraction separated by spaces :"<<endl;
cin>>one3;
cin>>two3;
cout<<"Input the numerator and denominator of a fraction separated by spaces :"<<endl;
cin>>three3;
cin>>four3;
cout<<"Input instruction*_" << endl;
e3 = one3*three3;
f3 = two3*four3;
x=gcd(e3,f3);
simplify(e3,f3,x);
cout<<"("<< one3 << "/"<< two3 <<") * ("<< three3 <<"/"<< four3 <<") = " << e3 << "/" << f3;
cout << "\n";
}
int gcd(int x2, int y2)
{
int i;
int gcd2;
for (i=1; i<=x2; i++)
{
if((x2%i==0) && (y2%i==0))
gcd2 = i;
}
return gcd2;
}
int simplify(int x2 , int y2 ,int gcd )
{
int a;
int b;
a= x2/gcd;
b= y2/gcd;
return (a,b);
}
int main()
{
multiply();
system ("PAUSE");
}