visual studio 2012 c++ error

Question

I just started to learn c++ and I wanted to show an arry in promt but i get this weird error

this is my code:

#include "stdafx.h"
#include "conio.h"
#include <iostream>
using namespace std;

void _show(char a[10][10])
{
    int i,j;
    for(i=0;i<10;i++)
        for(j=0;j<10;j++)
            cout<<a[i][j];
}
void _main(int argc, _TCHAR* argv[])
{
    char a[10][10];
    int i,j;
    for(i=0;i<10;i++)
        for(j=0;j<10;j++)
            a[i][j]=0;
    _show(a);
}

and this is the error:

Error 1 error LNK2019: unresolved external symbol _main referenced in function

Error 2 error LNK1120: 1 unresolved externals

You want `_tmain`, not `_main`. And unless you're creating some project type that requires VisualC++ extensions, I'd lose the `#include ` (and turn off pre-compiled headers); and replace `void _tmain(int argc, _TCHAR* argv[])` with `int main(int argc, char* argv[])` — Praetorian, Jul 29 '13 at 19:34
You should find another source for your learning. You are using plenty of non-c++ constructs here. — juanchopanza, Jul 29 '13 at 19:34
More on the [main function here](http://en.wikipedia.org/wiki/Main_function). Note that the `_TCHAR` thing is not standard C++, but is standard for a certain C++ implementation. Also, see [this list of books](http://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-list). — juanchopanza, Jul 29 '13 at 19:38
You are also accessing out of bounds. Needs to to <10 rather than <11 — David Heffernan, Jul 29 '13 at 19:40
@user2302416 As first, I would start learning classic C over C++. — Martin Perry, Jul 29 '13 at 19:41

score 4 · Answer 1 · edited Jul 29 '13 at 19:54

4

Your program is missing "main" function (which is used as entry point from OS). This function MUST have name: int main(int argc, char * argv[]) (for classic console based application)

edited Jul 29 '13 at 19:54

Hans Passant

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answered Jul 29 '13 at 19:38

Martin Perry

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score 0 · Answer 2 · edited May 23 '17 at 12:20

0

Don't use underscores here is an explanation why as they are reserved

main function should be declared as

int main(int argc, char *argv[])

edited May 23 '17 at 12:20

Community

1
1

answered Jul 29 '13 at 19:37

A. H.

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20

visual studio 2012 c++ error

2 Answers2