I have to do a program and start with the fraction class and write a main () program that obtains an arbitrary number of fractions from the user,stores them in an array of type fraction, averages them, and displays the result ..

and this is my code
# include <iostream>
using namespace std;

class fraction
{
private:
int a;
int b;
public:
void get_fraction()
{
char slash = '\\';
cout<<"Enter Fraction:";
cin>>a>>slash>>b;
}
void print_fraction()
{
int c = gcd(a, b);
char slash = '\\';
cout<<a/c<<slash<<b/c<<"\t";
}

fraction fadd (fraction g1,fraction g2)
{
fraction total;
total.a =(g1.a*g2.b+g1.b*g2.a);
total.b=(g1.b*g2.b);
return total;
}
fraction fsub (fraction g1,fraction g2)
{
fraction total;
total.a=(g1.a*g2.b-g1.b*g2.a);
total.b=(g1.b*g2.b);
return total;
}
fraction fmul (fraction g1,fraction g2)
{
fraction total;
total.a=(g1.a*g2.a);
total.b=(g1.b*g2.b);
return total;
}
fraction fdiv (fraction g1,fraction g2)
{
fraction total;
total.a=(g1.a*g2.a);
total.b=(g1.b*g2.b);
return total;
}
void setA(int x)
{
a = x;
}
void setB(int x)
{
b = x;
}
int gcd(int x, int y)
{
int r;
while(y)
{
r = x % y;
x = y;
y = r;
}
return(x);
}
};

int main()
{
int count = 0;
char val;
fraction frac[100], sum, temp;;
sum.setA(0);
sum.setB(1);

do
{
frac[count].get_fraction();
cout<<"Would you like to continue(Enter'y' or 'n')? ";
cin>>val;
count++;

}while(val != 'n');

for(int i = 0; i<count; i++)
{
sum = sum.fadd(sum, frac[i]);
}
temp.setA(1);
temp.setB(count);

temp = temp.fmul(temp, sum);

cout<<"The average is : ";
temp.print_fraction();
cout<<endl;

return 0;
}

and it works fine but my teacher told me to change this code

void setA(int x)
{
a = x;
}
void setB(int x)
{
b = x;
}
int gcd(int x, int y)
{
int r;
while(y)
{
r = x % y;
x = y;
y = r;
}
return(x);
}

with is code
void lowterms()
{
long tnum,tden,temp,gcd;
tnum =labs(a);
tden =labs(b);
if(tden==0 )
{ cout<<"illegal fraction: division by 0";exit(1); }
else if (tnum==0)
{ a=0; b=1;return; }
while(tnum !=0)
{
if(tnum<tden)
{temp=tnum;tnum=tden; tden=temp;}
tnum=tnum-tden;
}
gcd=tden;
a=a/gcd;
b=b/gcd;
}

when I did that my program not working so what do I have to change in main () so it work please ??

thank youuuu :)