Hi, I just started taking C Language class and my first project is due Friday. Was gonna ask for help cos it seems my whole program is ok except i dont know why the compiler won't let me use the sqrt() function :@

Here is a "copy" of the program:

#include <iostream.h>

int main() {

int a,b,c,d,e,f,g;

cout << "*** Program to solve the ecuation Ax^2 + Bx + C = 0 ***\n"<< "Enter the value of the coefficients.\n";

//coeficientes

cout << "A=";

cin >> a;

cout << "B=";

cin >> b;

cout << "C=";

cin >> c;

cout << "*** The equation to solve is:" <<a<<"X^2 + "<<b<<"X + " <<c<<" = 0\n";

d = (b*b + 4*a*c);

e = (-(b));

f = 2*a;

g = sqrt(d);

if (d<0)

cout << "*** The equation has no real solutions.\n";

if (d>0)

cout << "*** The equation has two real solutions.\n";

cout << "The solutions are: " << -b + sqrt(d)/f <<"and" << -b - sqrt(d)/f; endl;

if (d=0)

cout << "*** The equation has only one real solution.\n";

cout << "The solution is: " << -b/f; endl;

return 0;

}

Be aware it may be full of error but heck its my first try :/

any help would be greatly appreciated :)

btw, the proggy im using is Microsoft Visual C++ 6.0