I understand that cin.eof() tests the stream format. And while giving input, end of character is not reached when there is wrong in the input. I tested this on my MSV C++ 2010 and am not understanding the strange results. No matter what I give the input, I am getting Format Error message that is … Read more
Try this:
Both have the same complexity: Constant. From the N4431 working draft, §21.4.4 size_type size() const noexcept; Returns: A count of the number of char-like objects currently in the string. Complexity: Constant time. And size_type length() const noexcept; Returns: size(). […] iterates through all the characters and counts the length […] That’s C strings you’re thinking … Read more
<graphics.h> is very old library. It’s better to use something that is new Here are some 2D libraries (platform independent) for C/C++ SDL GTK+ Qt Also there is a free very powerful 3D open source graphics library for C++ OGRE
I’m learning C and I’m still not sure if I understood the difference between & and * yet. Allow me to try to explain it: I got these, but then it becomes confusing. So, both funct(*a) and funct(&a) are correct, right? What’s the difference?
There is no difference unless you write something weird like In the first case, the assignment will be to a temporary, and the overall effect will be v1 += v2. In the second case, the assignment will be to v1, so the overall effect will be v1 = v3. In the third case, the assignment won’t be allowed. … Read more
strncasecmp The strcasecmp() function performs a byte-by-byte comparison of the strings s1 and s2, ignoring the case of the characters. It returns an integer less than, equal to, or greater than zero if s1 is found, respectively, to be less than, to match, or be greater than s2. The strncasecmp() function is similar, except that it compares no more than n bytes of s1 and s2…
If you install macports you can install gcc select, and then choose your gcc version. To see your versions use To select a version use
I have a QString in my sources. So I need to convert it to integer without “Kb”. I tried Abcd.toInt() but it does not work.
As per the documentation, these are just synonyms. size() is there to be consistent with other STL containers (like vector, map, etc.) and length() is to be consistent with most peoples’ intuitive notion of character strings. People usually talk about a word, sentence or paragraph’s length, not its size, so length() is there to make … Read more