malloc.h(198) : error C2065: '_ALLOCA_S_MARKER_SIZE' : undeclared identifier

问题

Environment : Visual Studio 2008 Professional Edition

Could Anyone suggest how to fix this errors? I am trying to build program of hexadecimal to decimal conversion but gets some error cases like,

1] C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\include\malloc.h(198) : error C2065: '_ALLOCA_S_MARKER_SIZE' : undeclared identifier

2] C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\include\malloc.h(208) : error C2065: '_ALLOCA_S_MARKER_SIZE' : undeclared identifier

3] C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\include\malloc.h(243) : error C2065: '_ALLOCA_S_MARKER_SIZE' : undeclared identifier

Also i want to ask is it the error of Visual Studio version?

---

I already done that much

1] Added path of Include folder : C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\include

2] I created a project with Application Type = Console Application | Additional optional = Empty project | Finished

3] Also build this code : error C2144: syntax error : 'void' should be preceded by ';'

 #include <iostream>
 #include <string>

 using namespace std;

 int main()
 {
string hex_string = "1F1FA2";
int number =0;

number = stoi(hex_string, 0, 16);
cout<<"hex_string: "<<hex_string<<endl;
cout<<"number: "<<number<<endl;

hex_string = "12345";
number = stoi(hex_string, 0, 16);
cout<<"hex_string: "<<hex_string<<endl;
cout<<"number: "<<number<<endl;

return 0;
  }

I expected output as like ,

hex_string: 1F1FA2

number: 2039714

hex_string: 12345

number: 74565, But getting multiple error

来源：https://stackoverflow.com/questions/58497120/malloc-h198-error-c2065-alloca-s-marker-size-undeclared-identifier