This question already has answers here:
Correct way to work with vector of arrays
(4 answers)
Closed 5 years ago.
Is vector<int[3]> a; valid C++ ?
Can this cause problems?
I tried just now...
It can't be compiled successfully on VS.
But if I only code vector<int[3]> a;, and don't use this vector, it can be compiled successfully.
Related
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Is there a C++ decompiler? [closed]
(5 answers)
Is it possible to "decompile" a Windows .exe? Or at least view the Assembly?
(16 answers)
Closed 2 years ago.
If yes, can someone point me in the right direction to where to start looking?
This question already has answers here:
What is wrong with using goto? [duplicate]
(6 answers)
GOTO still considered harmful? [closed]
(49 answers)
Closed 3 years ago.
In my CPP class my professor strictly asked us to not to use goto statement as long as possible. Why is so, as I think there are no memory or any issues whatsoever with goto?
This question already has answers here:
Does clearing a vector affect its capacity?
(4 answers)
C++ delete vector, objects, free memory
(7 answers)
Closed 3 years ago.
Sometimes I detect in different c++ projects code like this:
std::vector<DataClass> _dataVec;
...
std::vector<DataClass>().swap(_dataVec);
Is this code more effective than obvious and simple clear call
_dataVec.clear();
or these code samples have some kind of difference?
For what purpose I should prefer first variant?
This question already has answers here:
How does the Comma Operator work
(9 answers)
Closed 4 years ago.
I was practicing practicing some programming and by mistake wrote the following line of code :
int a,b;
cin>>a,b;
Can anybody explain what the comma does here and why doesn't the compiler show any error.
It means that the whole expression has the value b.
But because b is not initialised the behaviour of your code is undefined!
Modern compilers can warm you of this.
This question already has answers here:
How can we check if a file Exists or not using Win32 program?
(9 answers)
C++: Which is the best method of checking for file existence on windows platform [duplicate]
(11 answers)
Closed 9 years ago.
I need a function in c++ to check if a given path/filename exists on the computer.
Can anyone help me?
This could be another possibilty besides the ones from the comments
PathFileExists