Problems with code from the FAQ
I'm having some trouble with the code from the Convert a string to a int (C++)
I've only changed it a little bit. Here's what I got so far:
Code:
#include <sstream>
#include <string>
#include <iostream> //I added this
using namespace std;
bool StringToInt(const string &s, int &i);
int main()
{
string s1 = "12";
string s2 = "ZZZ";
int result;
if (StringToInt(s1, result))
{
cout << "The string value is " << s1
<< " and the int value is " << result << endl;
}
else
{
cout << "Number conversion failed" <<endl;
}
if (StringToInt(s2, result))
{
cout << "The string value is " << s2
<< " and the int value is " << result << endl;
}
else
{
cout << "Number conversion failed on " <<s2 <<endl;
}
return 0;
}
bool StringToInt(const string &s, int &i)
{
istringstream myStream(s);
if (myStream>>i)
return true;
else
return false;
}
/*
* Program output:
The string value is 12 and the int value is 12
Number conversion failed on ZZZ
*
*/
I get the following error:
--------------------Configuration: onlyatest - Win32 Debug--------------------
Compiling...
thisisatest.cpp
Linking...
LIBCD.lib(wincrt0.obj) : error LNK2001: unresolved external symbol _WinMain@16
Debug/onlyatest.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.
onlyatest.exe - 2 error(s), 0 warning(s)
I think the error comes from the fact that "result" is never assigned a value. Can anyone give me a hand on who to fix this? I am using Visual C++ 6.0.
Thanks
