Difference between & and && in C? - Stack Overflow
Apr 3, 2018 · The & operator performs a bit-wise and operation on its integer operands, producing an integer result. Thus (8 & 4) is (0b00001000 bitand 0b00000100) (using a binary notation that does not exist in standard C, for clarity), which results in 0b00000000 or 0. The && operator performs a logical and operation on its boolean operands, producing a ...
The Definitive C Book Guide and List - Stack Overflow
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 ...
Why is %c used in C? - Stack Overflow
Jun 8, 2012 at 11:31. printf needs to know the size of the argument in order to print it (to cast it appropriately, so to say). A char has size 1, an int has at least that, on most machines more. Also, when using %c you want a character printed, not a number. In the D language, you would always use %s and let the compiler worry about the types.
c - What does tilde (~) operator do? - Stack Overflow
Jan 17, 2020 · 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. For example:
c - What is the difference between ++i and i++? - Stack Overflow
Aug 24, 2008 · i initial value: 0; value returned by i++: 0, i after: 1. i initial value: 0; value returned by ++i: 1, i after: 1. So basically ++i returns the value after it is incremented, while i++ return the value before it is incremented. At the end, in both cases the i will have its value incremented.
Pointers in C: when to use the ampersand and the asterisk?
If you think of them as pointers, you'll be using * to get at the values inside of them as explained above, but there is also another, more common way using the [] operator: int a[2]; // array of integers. int i = *a; // the value of the first element of a. int …
pointers - Arrow operator (->) usage in C - Stack Overflow
Apr 4, 2010 · Instead you use this (*ptr).kg and you force compiler to 1st dereference the pointer and enable acess to the chunk of data and 2nd you add an offset (designator) to choose the member. Check this image I made: But if you would have nested members this syntax would become unreadable and therefore -> was introduced.
and the & operators in c programming? - Stack Overflow
Aug 10, 2016 · 5. When a variable is paired with the * operator, that variable holds a memory address. When it is paired with the & operator, it returns the address at which the variable is held. If you had. int x = 5; //5 is located in memory at, for example, 0xbffff804. int *y = &x; //&x is the same thing as 0xbffff804, so y now points to that address.
syntax - What does "static" mean in C? - Stack Overflow
Feb 21, 2009 · In the C programming language, static is used with global variables and functions to set their scope to the containing file. In local variables, static is used to store the variable in the statically allocated memory instead of the automatically allocated memory. While the language does not dictate the implementation of either type of memory ...
What does %s and %d mean in printf in the C language?
Jan 27, 2012 · %s tells printf that the corresponding argument is to be treated as a string (in C terms, a 0-terminated sequence of char); the type of the corresponding argument must be char *. %d tells printf that the corresponding argument is to be treated as an integer value; the type of the corresponding argument must be int .