/C++/Error: use of parameter outside function body before ] token c++

Error: use of parameter outside function body before ] token c++

If you are using GCC, then you are to pass the length of the array 
as a parameter to the function.

void foo (int m, int arr[][m]) {
    //...
}

However, there seems to be a bug in either the compiler or 
the documentation, as the above function prototype syntax 
only works when compiling C code, not C++ (as of gcc version 4.8.2). 
The only work-around I found was to use a void * parameter, 
and cast it int the function body:

int foo_workaround (int m, void *x)
{
    int (*arr)[m] = static_cast<int (*)[m]>(x);
    //...
}

There are other solutions if you do not want to rely on a compiler
extension. If you don't mind a separate allocation for each row, 
you can use a vector of vectors, for example:

std::vector<std::vector<int> > arr(n, std::vector<int>(m));

Source: stackoverflow.com

Similar codes

0 vote258 views2 answers
String to wstring conversion c++
C++
1 vote261 views1 answer
C++ remove text file
C++
0 vote282 views1 answer
How to install boost c++ on windows
C++
3 votes273 views1 answer
Find in set of pairs using first value cpp
C++
3 votes280 views1 answer
Repeat character n times c++
C++
3 votes273 views1 answer
Initializing 2d vector
C++
0 vote296 views1 answer
Lists occurrences of characters in the string c++
C++
0 vote257 views1 answer
Javascript if else exercises
C++
0 vote264 views1 answer
Recherche recursive le max dans une liste
C++
0 vote270 views1 answer
Print value of data in c++
C++