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What does int argc, char *argv[] mean?
In many C++ IDE's and compilers, when it generates the main function for you, it looks like this:
8 Answers
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Is cout synchronized/thread-safe?
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The C++03 standard does not say anything about it. When you have no guarantees about the thread-safety of something, you should treat it as not thread-safe.
Of particular interest here is the fact that cout is buffered. Even if ...
How to initialize a struct in accordance with C programming language standards
... the same as objects that have static storage duration.
Microsoft Visual C++ compiler should support designated initializers since version 2013 according to official blog post C++ Conformance Roadmap. Paragraph Initializing unions and structs of Initializers article at MSDN Visual Studio document...
Why does C# allow {} code blocks without a preceding statement?
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And in C++, because of RAII instead of GC, it is far more useful.
– Deduplicator
Dec 23 '15 at 1:44
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How to repeat a string a variable number of times in C++?
... want to insert 'n' spaces (or any string) at the beginning of a string in C++. Is there any direct way to do this using either std::strings or char* strings?
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Are typedef and #define the same in c?
...ound types (like structs and function pointers) readable and handlable (in C++ there are even situations where you must typedef a type).
For (3): You should always prefer language features over preprocessor macros when that's possible! So always use typedefs for types, and constant values for const...
Mixing C# & VB In The Same Project
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I believe you can mix managed and unmanaged c++ in the same project.
– Callum Rogers
Aug 14 '09 at 15:43
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Convert to absolute value in Objective-C
...re present both in Objective-C and plain C (and are generally available in C++ programs too.)
(Alas, there is no habs(short) function. Or scabs(signed char) for that matter...)
Apple's and GNU's Objective-C headers also include an ABS() macro which is type-agnostic. I don't recommend using ABS()...
Restore the state of std::cout after manipulating it
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@ChrisJester-Young, actually good C++ is RAII, especially in a case like this one!
– Alexis Wilke
Feb 16 '15 at 2:45
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Why aren't variables declared in “try” in scope in “catch” or “finally”?
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EDIT: I guess every rule does have an exception. The following is valid C++:
int f() { return 0; }
void main()
{
int y = 0;
if (int x = f())
{
cout << x;
}
else
{
cout << x;
}
}
The scope of x is the conditional, the then clause and th...