Why VScode display"'iostream' file not found"in .h file?

//vector.h #ifndef MYVECTOR_H_ #define MYVECTOR_H_ #include<iostream> #include<vector> using namespace std; class vectors { public: vectors(void); ~vectors(void); vectors(int *vec,int n); vectors(vectors &a); friend vectors operator + (vectors a, vectors b);//加法 friend vectors operator - (vectors a, vectors b);//减法 friend vectors operator ++(vectors a);//前自增 friend vectors operator ++(vectors a,int n);//后自增 friend vectors operator --(vectors a);//前自减 friend vectors operator --(vectors a,int n);//后自减 friend vectors operator * (vectors a,vectors b);//数乘 void Display();//显示函数 private: int * Vec;//向量指针 int N;//维数 }; vectors::vectors(void) { } } #endif 

I'm writing a header file by C++ in VScode, but VScode show me:

'iostream' file not found

In cpp file, it never happens. I think I should install all it need. And I never meet it before.So I don't know how to do with it.

Ok, I try to give more details.

I use vscode to write code. In last codes, I just used '.cpp' files, so I haven't get an error report. But in this time, I try to write my header file as above, vscode tell me:iostream' file not found. I can't correct it. So I ask someone for help.

1 Answer

You can try recognize the compiler. Open command palette CTRL+SHIFT+P, type C/C++: Edit Configurations (UI) and open, then choose your compiler path, for instance, C:/MinGW/bin/g++.