What exactly is wrong with this C++ code.?

Can you help me out. I think I'm not calling the functions correctly.





#include %26lt;iostream%26gt;


#include %26lt;fstream%26gt;


using namespace std;


int validgroup(int, int, int);


int sum180(int, int, int);


int checkangles(int, int, int);


ofstream outfile("p8.out");


int main()


{


int a, b, c, z;


char answer;





do {


cout %26lt;%26lt; "Type in the first angle %26gt; ";


cin %26gt;%26gt; a;


cout %26lt;%26lt; "Type in the second angle %26gt; ";


cin %26gt;%26gt; b;


cout %26lt;%26lt; "Type in the third angle %26gt; ";


cin %26gt;%26gt; c;


cout %26lt;%26lt; a %26lt;%26lt; " " %26lt;%26lt; b %26lt;%26lt; " " %26lt;%26lt; c %26lt;%26lt; endl;


outfile %26lt;%26lt; a %26lt;%26lt; " " %26lt;%26lt; b %26lt;%26lt; " " %26lt;%26lt; c %26lt;%26lt; endl;


z = validgroup(a,b,c);


cout %26lt;%26lt; "Type y to continue; n to stop%26gt; ";


cin %26gt;%26gt; answer;


} while (answer == 'y');








outfile.close();


system ("pause");


return 0;


}





int validgroup(int angle1, int angle2, int angle3)


{


int x,y;





x = sum180(angle1, angle2, angle3);


y = checkangles(angle1, angle1, angle1);


if (x == 0 || y == 0 )


cout %26lt;%26lt; "This group is invalid";


else


cout %26lt;%26lt; "This is a valid group";





}





int sum180(int a1, int a2, int a3)


{


int sum;





sum = a1 + a2 + a3;


if (sum == 180)


return 1;


else {


return 0;


cout %26lt;%26lt; "The group does not sum to 180";}


}





int checkangles(int ang1, int ang2, int ang3)


{


int numemps = 0;





if (ang1 %26lt; 0 || ang1 %26gt; 180)


cout %26lt;%26lt; ang1 %26lt;%26lt; " is not between 0 and 180 ";


else


numemps++;





if (ang2 %26lt; 0 || ang2 %26gt; 180)


cout %26lt;%26lt; ang1 %26lt;%26lt; " is not between 0 and 180";


else


numemps++;





if (ang3 %26lt; 0 || ang3 %26gt; 180)


cout %26lt;%26lt; ang1 %26lt;%26lt; " is not between 0 and 180";


else


numemps++;





if (numemps == 3)


return 1;


else


return 0;


}

What exactly is wrong with this C++ code.?
If you are still stuck, you may contact a C++ expert live at website like http://askexpert.info/ .
Reply:in checkangles you want to check


if(numemps%26gt;0)


don't you ?


return 1 on any error not just when all three angles are wrong