.cc is more a Unix convention, although I see it less and less even there. GNU make has rules for .cpp so that's probably preferred, it will work by default on both Windows and everything else. On the other hand modern C++ uses no extension at all for headers, I really don't like that.

2015年8月2日 · Different users adopted different solutions: .cc, .cpp, .cxx and possibly others. Today, outside of the Unix world, it's mostly .cpp. Unix seems to use .cc more often. For headers, the situation is even more confusing: for whatever reasons, the earliest C++ authors decided not to distinguish between headers for C and for C++, and used .h.

2018年8月13日 · On Solaris, CC is normally the name of the Sun C++ compiler. On Solaris, cc is normally the name of the Sun C compiler. On Linux, if it exists, CC is probably a link to g++. On Linux, cc is a link to gcc. However, even on Solaris, it could be that cc is the old BSD-based C compiler from /usr/ucb. In practice, that usually isn't installed and ...

2010年4月1日 · That said, X.h and X.cc represent the same logical unit. If your dependency on Y.h ever changed (for example, turned it into a forward declaration), you'd be changing the class anyway. So you can move #include "Y.h" to X.cc justifiably. In other words, X.cc and X.h go hand in hand. X.cc can reliably assume what's in X.h.

The format string attack on printf you mentioned isn't specific to the "%x" formatting - in any case where printf has more formatting parameters than passed variables, it will read values from the stack that do not belong to it. You will get the same issue with %d for example. %x is useful when you want to see those values as hex.

2010年1月22日 · For every header < X.h > defining part of the C standard library in the global namespace and also in namespace std, there is a header < cX > defining the same names in the std namespace only. However, when I use C headers in the < cX > style, I don't need to qualify the namespace.

There are multiple levels to understanding call/cc. First you need to understand the terms and the how the mechanism works. Then an understanding of how and when call/cc is used in "real life" programming is needed. The first level can be reached by …

2010年4月1日 · a sequence of one or more multibyte characters enclosed in single-quotes, as in 'x'. and. An integer character constant has type int. The value of an integer character constant containing a single character that maps to a single-byte execution character is the numerical value of the representation of the mapped character interpreted as an integer.

2014年9月26日 · The x's represent numbers only. so total number of digits = 9 (anything between 0-9) total number of elements in the value is either 11 or 10... depending on which format. and total number of dashes is either 2 or 1. How can I write this into a regular expression? Can anyone point me towards the right direction :- article/website.

2012年2月18日 · I have the following code in file main.c: int main() { int i; for (i = 0; i < 5; i++) { } return 0; }