#include <cstdlib>#include <iostream>using namespace std;class Fract{          int num,den;      public:                        friend ostream& operator << (ostream& output,Fract& temp);             friend istream& operator >> (istream& intput,Fract& temp1);             Fract operator + (Fract& temp1);             int gcd(int m,int n)             {                 int r;                 if(m<n)                 {                        r=m;m=n;n=r;                 }                 while(r=m%n)                 {                      m=n;                      n=r;                 }                 return n;             }           };istream& operator >>(istream& input,Fract& temp1){         input>>temp1.num>>temp1.den;         return input;}ostream& operator <<(ostream& output,Fract& temp){         output<<temp.num<<"/"<<temp.den<<endl;         return output;}Fract Fract::operator + (Fract& temp1){         Fract sum;         int x,y,temp;         x=num*temp1.den+den*temp1.num;         y=den*temp1.den;         temp=gcd(x,y);         x=x/temp;         y=y/temp;         sum.num=x;         sum.den=y;         return sum;}             int main(int argc, char *argv[]){    Fract temp1,temp2,temp;    cin>>temp1>>temp2;    temp=temp1+temp2;    cout<<temp;    system("PAUSE");    return EXIT_SUCCESS;}