If your compiler allows it then its fine to declare anywhere you want. In fact the code is more readable (IMHO) when you declare the variable where you use instead of at the top of a function because it …

The clean, reliable way to declare and define global variables is to use a header file to contain an extern declaration of the variable. The header is included by the one source file that defines the variable …

Sep 18, 2008 · I've always wondered this - why can't you declare variables after a case label in a switch statement? In C++ you can declare variables pretty much anywhere (and declaring them close to first …

According to the C++ grammar (archived link), a for-init-statement (the part of the for-loop that you are asking about) can only be: a simple-declaration, e.g. int i = 5, j = 12, in which all declared variables …

In case I have a variable that may be used in several sources - is it a good practice to declare it in a header? or is it better to declare it in a .c file and use extern in other files?

I long thought that in C, all variables had to be declared at the beginning of the function. I know that in C99, the rules are the same as in C++, but what are the variable declaration placement ru...

Nov 26, 2015 · If I define a global variable in a .c file, how can I use the same variable in another .c file? file1.c:

Nov 3, 2009 · 9 The keyword static has several uses; Outside of a function it simply limits the visibility of a function or variable to the compilation unit (.c file) the function or variable occurs in. That way the …

Oct 14, 2010 · 12 Python isn't necessarily easier/faster than C, though it's possible that it's simpler ;) To clarify another statement you made, "you don't have to declare the data type" - it should be restated …

The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo(). The lifetime of a variable is the period over which it exists. If x were defined without the …