Thread: Can't compile...need help

I debug it over and over again. It still has errors. It said:

error C2601: 'main' : local function definitions are illegal
fatal error C1004: unexpected end of file found

I can't get it.What's wrong with my code?
Thx in advance!

Code:

#include <iostream>
#include <math.h>
using namespace std;

void getInputs(double& a, double& b, double& c)
{
	cout<<"Please input coefficient a: ";
	cin>>a;
	cout<<"Please input coefficient b: ";
	cin>>b;
	cout<<"Please input the constant c: ";
	cin>>c;
}

int quadraticSolver(double a, double b, double c, double& root1, double& root2)
{
	if ((a!=0) && ((b*b-4*a*c)>0))
	{
	root1=(-b+sqrt(b*b-4*a*c))/2*a;
	root2=(-b-sqrt(b*b-4*a*c))/2*a;
	}

	if ((a!=0) && ((b*b-4*a*c)==0))
	{
	root1=(-b)/(2*a);
	}

}

void displayResult(double x1, double x2, int nr_roots)
{	
	switch(nr_roots)
	{
	case 0: cout<<"The root is imaginary."; break;
	case 1: cout<<"The root is x = "<<x1; break;
	case 2: cout<<"The roots are x = "<<x1<<" and x = "<<x2; break;
	}
	
int main()
{
	double x,y,z,r1,r2;
	int no_of_root;
	getInputs(x,y,z);
	quadraticSolver(x,y,z,r1,r2);
	if (b*b-4*a*c)>0)
		no_of_root=2;
	if (b*b-4*a*c)==0)
		no_of_root=1;
	if (b*b-4*a*c)<0)
		no_of_root=0;
	displayResult(r1,r2,no_of_root);
	return 0;
}

Code:

void displayResult(double x1, double x2, int nr_roots)
{	
	switch(nr_roots)
	{
	case 0: cout<<"The root is imaginary."; break;
	case 1: cout<<"The root is x = "<<x1; break;
	case 2: cout<<"The roots are x = "<<x1<<" and x = "<<x2; break;
	}
}

Code:

#include <iostream>
#include <math>
using namespace std;

// Same as yours
void getInputs( double& a, double& b, double& c )
{
	cout<<"Please input coefficient a: ";
	cin>>a;

	cout<<"Please input coefficient b: ";
	cin>>b;

	cout<<"Please input the constant c: ";
	cin>>c;
}

// I changed this to return a value which defines the type of root
// Imaginary, real or zero. Just copied from main
int quadraticSolver(double a, double b, double c, double& root1, double& root2)
{
	if ((a!=0) && ((b*b-4*a*c)>0))
	{
		root1=(-b+sqrt(b*b-4*a*c))/2*a;
		root2=(-b-sqrt(b*b-4*a*c))/2*a;
	}

	if ((a!=0) && ((b*b-4*a*c)==0))
	{
		root1=(-b)/(2*a);
	}

	int no_of_root = 0;

	if ( (b*b-4*a*c)>0 )
		no_of_root=2;
	if ( (b*b-4*a*c)==0 )
		no_of_root=1;
	if ( (b*b-4*a*c)<0 )
		no_of_root=0;

	return no_of_root;

}


// Same as yours
void displayResult(double x1, double x2, int nr_roots)
{	
	switch(nr_roots)
	{
		case 0: cout<<"The root is imaginary."; break;
		case 1: cout<<"The root is x = "<<x1; break;
		case 2: cout<<"The roots are x = "<<x1<<" and x = "<<x2; break;
	}
}
	
int main( void )
{
	double a, b, c, r1, r2;
	int no_of_root;

	getInputs( a, b, c );
	no_of_root = quadraticSolver( a, b, c, r1 ,r2 );

	displayResult( r1, r2, no_of_root );
	return 0;
}

Just made some changes. You also would have gotten errors about not having a, b, and c defined in main, and you using them. They weren't global, so you don't get access to them from functions.

Thank you,guys.Compilation succeeded.