为什么我不能在 c++ vscode 中使用字符串？

Question

I am unable to run a code as simple as the following. Everything works fine if I am not working with strings. I get an error- exited with code=3221225785 in 2.131 seconds . I've tried updating my MinGw compiler . Does not work even if I use compile and run extension on vscode .

#include<iostream>
#include<string>
int main()
{
  std::string a="world";
  std::cout<<a;
  return 0;
}

Answer 1

it is really frustating to handle your systems setup, especially if you want to start to learn coding. My rescue called: build system. I'm using cmake with this tutorial .

But first thing first, for your special question, what you'll need are following workspace:

working_directory
   |--build/
   |--src/test_code.cpp
   |--src/CMakeLists.txt

with your code (I name it test_code.cpp ):

#include<iostream>
#include<string>
int main()
{
  std::string a="world";
  std::cout<<a;
  return 0;
}

and CMakeLists.txt :

cmake_minimum_required (VERSION 3.7)
project(testSomething)
add_executable(test test_code.cpp)

and run following in /build directory:

> cmake ../src
> make
> ./test

Of course you'll need to install cmake first. I think, directly using a build system in a tutorial helps you take care of your system setup, so usually those build system could find your installed compiler, linker etc. without you telling it explicitly. (So its a kind of vodoo magic:)).

Answer 2

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I tried the same, but I'm getting proper results in the terminal. I think you have not added 'mingw' to the environmental path.

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