问题:

I'm having some problems with Code::Blocks, and this is the output after / while compiling;

3|iostream: No such file or directory|
4|error: syntax error before "namespace"|
|In function `main':|
8|error: `cout' undeclared (first use in this function)|
8|error: (Each undeclared identifier is reported only once|
8|error: for each function it appears in.)|
||=== Build finished: 5 errors, 1 warnings ===|

My code is as follows;

// my first program in C++

#include <iostream>
using namespace std;

int main ()
{
  cout << "Hello World!";
  return 0;
}

回答1:

You Have to Create Console C++ Project.

File -> New Project -> Console Application -> C++ .

It will set variables and linker options like basics libraries.

回答2:

The cout issue is because you should say

using namespace std;

The issue with iostreams is probably that you need to set the path to MINGW in your toolchain. You can access this from the Settings->Compiler and debugger settings->Global compiler setting->toolchain executables menus/tabs. Here select the part where MINGW is installed and that should take care of it.