Why Does My C Code Produce 'error LNK2019: unresolved external symbol _WinMain@16' and How Do I Fix It?

Resolving "error LNK2019: unresolved external symbol _WinMain@16 referenced in function ___tmainCRTStartup"

In attempt to execute basic code, two errors surface:

#include <iostream>
#include <string>
using namespace::std;

template <class Type>
class Stack
{
public:
    Stack (int max):stack(new Type[max]), top(-1), maxsize(max){}
    ~Stack (void) {delete []stack;}
    void Push (Type &val);
    void Pop (void) {if (top>=0) --top;}
    Type& Top (void) {return stack[top];}
    //friend ostream& operator<< (ostream&, Stack&);
private:
    Type *stack;
    int top;
    const int maxSize;
};

template <class Type>
void Stack <Type>:: Push (Type &val)
{
    if (top+1<maxsize)
        stack [++top]=val;
}

Errors:

MSVCRTD.lib(crtexew.obj) : error LNK2019: unresolved external symbol _WinMain@16 referenced in function ___tmainCRTStartup

Resolution

This error originates from a linker problem. To address it:

1. Open your project properties in Visual Studio.
2. Navigate to Linker > System.
3. Under SubSystem, change the setting from Windows (/SUBSYSTEM:WINDOWS) to Console (/SUBSYSTEM:CONSOLE).

This should resolve the linker error and allow you to execute your code successfully.

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