Undefined Reference To Winmain 16 Dev C%2b%2b

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Undefined Reference To Winmain 16 Dev C%2b%2b 8,8/10 4995 reviews

Undefined Reference To Winmain 16 Dev C++ Test
Undefined Reference To Winmain@16' C++

P: 14

Hi everyone,
I'm new to programming with C++ and I'm using Code::Blocks as my compiler. I keep getting the error 'undefined reference to WinMain@16' and I have no idea how to fix it. My code is supposed to do different things with fractions, but anyway here is my code:(all code is in a project)
myFracDr.cpp

#include 'frac.h'
#include 'gcd.h'
#include <iostream>
using namespace std;
int main()
{
int x,y;
cout << 'Enter positive integer x: ';
cin >> x;
cout << 'Enter positive integer y: ';
cin >> y;
cout << FractionType::Initialize(x,y) << endl;
system('pause'); //keeps window open
return 0;
}

myFrac.cpp

#include 'frac.h'
#include 'gcd.h'
void FractionType::Initialize(int numerator, int denominator)
// Function: Initialize the fraction
// Pre: None
// Post: numerator is stored in num; denominator is stored in
// denom
{
num = numerator;
denom = denominator;
int cfactor = gcd(num, denom); // finds commom factor
num = num/cfactor; //reduces numerator
denom = denom/cfactor; //reduces denominator
}
int FractionType::NumeratorIs()
// Function: Returns the value of the numerator
// Pre: Fraction has been initialized
// Post: numerator is returned
{
return num;
}
int FractionType::DenominatorIs()
// Function: Returns the value of the denominator
// Pre: Reaction has been initialized
// Post: denominator is returned
{
return denom;
}
bool FractionType::IsZero()
// Function: Determines if fraction is zero
// Pre: Fraction has been initialized
// Post: Returns true if numerator is zero
{
return (num 0);
}
bool FractionType::IsNotProper()
// Function: Determines if fraction is a proper fraction
// Pre: Fraction has been initialized
// Post: Returns true if num is greater than or equal to denom
{
return (num >= denom);
}
int FractionType::ConvertToProper()
// Function: Converts the fraction to a whole number and a
// fractional part
// Pre: Fraction has been initialized, is in reduced form, and
// is not a proper fraction
// Post: Returns num divided by denom
// num is original num % denom; denom is not changed
{
int result;
result = num / denom;
num = num % denom;
return result;
}

gcd.cpp (finds greatest common divisor)

int gcd(int x, int y)
{
if (y0)
{
return x;
}
else
{
while (y>0)
{
int step1 = x%y;
x = y;
y = step1;
if (x%y0)
{
return y;
}
}
}
return 0;
}

then I just have to two header files (frac.h and gcd.h)that I know are correct
Thank you for looking!

Undefined Reference To Winmain 16 Dev C++ Test

Once added, it found main. Also, the nature of how this works means that mingw is trying to help by providing its own main which in turn calls WinMain. GUI programs would only have WinMain and the main stub in mingw is used to get there. /download-game-crash-of-cars-mod-apk-offline.html. Best minecraft animation software for mac. If you have a main, then it uses that instead. – Jeff Muir Mar 23 '16 at 0:53.

Undefined reference Put simply, the “undefined reference” error means you have a reference (nothing to do with the C reference type) to a name (function, variable, constant etc.) in your program that the linker cannot find a definition for when it looks through all the object files and libraries that make up your project.
Linker error undefined reference to `. Is the mangled name for the WinMain entry point. ↳ C Development.
WinMain replaces main as the entry point for Windows Applications so either you were trying to right a Windows application and left out WinMain or you wern't trying to write a Windows application and (hopefully) have a main but have compile/link with flags that tell the compiler/linker that this is a Windows application and probably linked with.
Once added, it found main. Also, the nature of how this works means that mingw is trying to help by providing its own main which in turn calls WinMain. GUI programs would only have WinMain and the main stub in mingw is used to get there. If you have a main, then it uses that instead. – Jeff Muir Mar 23 '16 at 0:53.
Re: Resolved but why? - undefined reference to ' email protected ' « Reply #1 on: December 02, 2009, 10:23:47 am » If you compile a single file to an executable with CB, that file must contain a main function.

Undefined Reference To Winmain@16' C++

P: 1

Hey! When trying to compile the code for a ordered vector class I get the following error:
[Linker error] undefined reference to `WinMain@16'
Anyone have any idea what I might be doing wrong? I've been through this code multiple times and have no idea what would cause an error like this, I've never seen one like it before. Any help would be greatly appreciated.
The class is supposed to be able to create a sorted list of vectors of type Object. If an object is added to the list it places it in the proper order (ie you want to put in a 5 in the list 2 3 4 6, the 5 would be inserted between the 4 and 6)
Code is as follows:

#include <stdlib.h>
#include <iostream>
#ifndef _ORDEREDVECTOR_H
#define _ORDEREDVECTOR_H
template <class Object>
class orderedVector
{
public:
orderedVector(int n);
orderedVector( );
orderedVector(const orderedVector & v);
virtual ~orderedVector( );
void dissolve ( );
void add (const Object x);
void remove (const Object x);
void removeAt (int i);
Object & operator [](int i);
int length( ) const;
bool isEmpty( ) const;
bool contains(const Object x);
private:
Object * buffer;
int size, capacity;
void reserve(int newCapacity);
void resize(int newCap) {reserve(newCap);}
};
template <class Object>
orderedVector<Object>::orderedVector( ) :size(0),capacity(0),buffer(0){}
template <class Object>
orderedVector<Object>::orderedVector(int n): size(0), capacity(n), buffer(0)
{
if (n < 0)
{
cerr << 'Error: You can't create a vector with a negative capacity!n';
exit(1);
}
}
template <class Object>
orderedVector<Object>::orderedVector(const orderedVector & v)
{
if (this &v)
{
cerr << 'Error: You can't copy a vector onto itself!n';
exit(1);
}
buffer = 0;
buffer = new Object[v.capacity];
size = v.length( );
capacity = v.capacity;
for (int i = 0; i < v.length( ); i++)
{
buffer[i] = v.buffer[i];
}
}
template <class Object>
orderedVector<Object>::~orderedVector( )
{
delete [ ] buffer;
}
template <class Object>
void orderedVector<Object>::add(const Object x)
{
if (size capacity)
resize(capacity + 5);
if (size 0)
buffer[0] = x;
else
{
for (int i = 0; i < size; i++)
{
if (x <= buffer[i])
{
int j = size;
while (j > i)
{
buffer[j] = buffer[j-1];
j--;
}
buffer[i] = x;
}
}
}
size++;
}
template <class Object>
void orderedVector<Object>::remove(const Object x)
{
bool temp;
for (i = 0; i < size; i++)
{
if (buffer[i] x)
temp = true;
else
temp = false;
}
if (temp false)
{
cerr << 'Error: Object doesn't exist!n';
exit(1);
}
else
{
for (int i = 0; i < size; i++)
{
int j = i;
while (j < size - 1)
{
buffer[j] = buffer[j+1];
j++;
}
}
size--;
}
}
template <class Object>
void orderedVector<Object>::removeAt(const int i)
{
if (i < 0 i >= size)
{
cerr << 'Error: Index out of range!n';
exit(1);
}
int j = i;
while (j < size - 1)
{
buffer[j] = buffer[j+1];
j++;
}
size--;
}
template <class Object>
Object & orderedVector<Object>::operator [] (int i)
{
if (i < 0 i >= size)
{
cerr << 'Error: Index out of range!n';
exit(1);
}
return buffer[i];
}
template <class Object>
int orderedVector<Object>::length( ) const
{
return size;
}
template <class Object>
bool orderedVector<Object>::isEmpty( ) const
{
return size 0;
}
template <class Object>
bool orderedVector<Object>::contains(const Object x)
{
bool temp;
for (i = 0; i < size; i++)
{
if (buffer[i] x)
temp = true;
else
temp = false;
}
return temp;
}
template <class Object>
void orderedVector<Object>::reserve(int newCap)
{
if (buffer 0)
{
size = 0;
capacity = 0;
}
if (newCap <= capacity)
return;
Object * newBuffer = new Object[newCap];
for (int i = 0; i < size; i++)
newBuffer[i]=buffer[i];
capacity = newCap;
delete [ ] buffer;
buffer = newBuffer;
}
#endif