i get some
error when i try to run this, could someone please tell me the mistakes, thank you!
[error: C:\Users\Ethan\Desktop\Untitled1.cpp In function `int main()':
25 C:\Users\Ethan\Desktop\Untitled1.cpp variable or field `findfactors' declared void
25 C:\Users\Ethan\Desktop\Untitled1.cpp initializer expression list treated as compound expression]
#include<iostream>
#include<cmath>
using namespace std;
void prompt(int&, int&, int&);
int gcd(int , int , int );//3 input, 3 output
void findfactors(int , int , int, int, int&, int&);//3 input, 2 output
void display(int, int, int, int, int);//5 inputs
int main()
{
int a, b, c; //The coefficients of the quadratic polynomial
int ag, bg, cg;//value of a, b, c after factor out gcd
int f1, f2; //The two factors of a*c which add to be b
int g; //The gcd of a, b, c
prompt(a, b, c);//Call the prompt function
g=gcd(a, b, c);//Calculation of g
void findfactors(a, b, c, f1, f2);//Call findFactors on factored polynomial
display(g, f1, f2, a, c);//Call display function to display the factored polynomial
system("PAUSE");
return 0;
}
void prompt(int& num1, int& num2, int& num3) //gets 3 ints from the user
{
cout << "This program factors polynomials of the form ax^2+bx+c."<<endl;
while(num1==0)
{
cout << "Enter a value for a: ";
cin >> num1;
if(num1==0)
{
cout<< "a must be non-zero."<<endl;
}
}
while(num2==0 && num3==0)
{
cout << "Enter a value for b: ";
cin >> num2;
cout << "Enter a value for c: ";
cin >> num3;
if(num2==0 && num3==0)
{
cout<< "b and c cannot both be 0."<<endl;
}
}
}
int gcd(int num1, int num2, int num3)
{
int k=2, gcd=1;
while (k<=num1 && k<=num2 && k<=num3)
{
if (num1%k==0 && num2%k==0 && num3%k==0)
gcd=k;
k++;
}
return gcd;
}
void findFactors(int Ag, int Bg, int Cg,int& F1, int& F2)
{
int y=Ag*Cg;
int z=sqrt(abs(y));
for(int i=-z; i<=z; i++) //from -sqrt(|y|) to sqrt(|y|)
{
if(i==0)i++; //skips 0
if(y%i==0) //if i is a factor of y
{
if(i+y/i==Bg) //if i and its partner add to be b
F1=i, F2=y/i;
else
F1=0, F2=0;
}
}
}
void display(int G, int factor1, int factor2, int A, int C)
{
int k=2, gcd1=1;
while (k<=A && k<=factor1)
{
if (A%k==0 && factor1%k==0)
gcd1=k;
k++;
}
int t=2, gcd2=1;
while (t<=factor2 && t<=C)
{
if (C%t==0 && factor2%t==0)
gcd2=t;
t++;
}
cout<<showpos<<G<<"*("<<gcd1<<"x"<<gcd2<<")("<<A/gcd1<<"x"<<C/gcd2<<")"<<endl;
}
