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2. Difference between & and && in C? - Stack Overflow

   stackoverflow.com/questions/49617159

   In early C, the operator && did not exist, and because of that & was used for this purpose. One way to explain it is that you could imagine that & is the same thing as applying && on each individual bit in the operands. Also note that & has lower precedence than &&, even though intuition says that it should be the other way around.

3. c - What does tilde (~) operator do? - Stack Overflow

   stackoverflow.com/questions/3952122

   The ~ operator in C++ (and other C-like languages like C and Java) performs a bitwise NOT operation - all the 1 bits in the operand are set to 0 and all the 0 bits in the operand are set to 1. In other words, it creates the complement of the original number.

4. pointers - Arrow operator (->) usage in C - Stack Overflow

   stackoverflow.com/questions/2575048

   I had to make a small change to Jack's program to get it to run. After declaring the struct pointer pvar, point it to the address of var. I found this solution on page 242 of Stephen Kochan's Programming in C.

5. c++ - .c vs .cc vs. .cpp vs .hpp vs .h vs .cxx - Stack Overflow

   stackoverflow.com/questions/5171502

   Historically, the first extensions used for C++ were .c and .h, exactly like for C. This caused practical problems, especially the .c which didn't allow build systems to easily differentiate C++ and C files. Unix, on which C++ has been developed, has case sensitive file systems. So some used .C for C++ files.

6. The Definitive C Book Guide and List - Stack Overflow

   stackoverflow.com/questions/562303

   This is a good cookbook-like approach suggested by comp.lang.c contributors. Object-oriented Programming with ANSI-C (Free PDF) - Axel-Tobias Schreiner (1993). The code gets a bit convoluted. If you want C++, use C++. It only uses C90, of course. Expert. Expert C Programming: Deep C Secrets - Peter van der Linden (1994). Lots of interesting ...

7. and the & operators in c programming? - Stack Overflow

   stackoverflow.com/questions/2702156

   One uses & to find the address of a variable. So if you have: int x = 42; and (for example) the computer has stored x at address location 5, &x would be 5.

8. Pointers in C: when to use the ampersand and the asterisk?

   stackoverflow.com/questions/2094666

   there are no strings in C, just character arrays that, by convention, represent a string of characters terminated by a zero (\0) character. When you pass the address of a variable to a function, you can de-reference the pointer to change the variable itself (normally variables are passed by value (except for arrays)).

9. Simple C example of doing an HTTP POST and consuming the response

   stackoverflow.com/questions/22077802

   I would like to create a very simple C application that does an HTTP post. It will take a few parameters, and use these to construct a URL. I'd just like to do a simple HTTP POST and get the response without the use of curl (the libraries are not and will not be installed on the machine this needs to run). Pseudo-code: Process 2 args

10. string - What does % [^\n] mean in C? - Stack Overflow

    stackoverflow.com/questions/39431924

    Question: what is %[^\n] mean in C? Basically the \n command prints the output in the next line, but in case of C gives the Null data followed by the above problem only. Because of that to remove the unwanted data or null data, need to add Complement/negotiated symbol[^\n]. It gives all characters until the next line and keeps the data in the ...

11. How do you do exponentiation in C? - Stack Overflow

    stackoverflow.com/questions/213042

    pow only works on floating-point numbers (doubles, actually).If you want to take powers of integers, and the base isn't known to be an exponent of 2, you'll have to roll your own.