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What always contains a pointer variable?
pointer variable in c contains the address or the location of the other variable. eg- if a=2 and address of a is 2345. b=&a then b is a pointer which contains 2345 which is the address of a. *b gives value of that is 2.
What is pointer of pointer?
pointer is the variable that holds the address of another variable
Define pointer in C?
Pointer is a variable, A variable that stores the address of another variable. Size of a pointer is 2 bytes.
What is pointer why you use pointer?
Pointer is a variable that stores the address of another variable. Since pointer is also akind of variable, thus pointer itself will be stored at a different memory location.
In pointers what is the use of pointer variable?
Pointer is a variable that stores the address of another variable . So pointer basically stores the address of another variable and size of pointer can be evaluated by using sizeof operator.
What is a ponters in c-programming?
with the help of pointers we able to store the memory location of any variable. In c the pointer variable is use to store the memory location of any variable. The pointer variable is define as a simple variable but in pointer variable use a special "*" character at the left most side of name of pointer variable. If any variable name have * it means it is a pointer variable it hold the memory location of variable.
What does pointer holds?
A pointer is used for pointing to a variable. It contains the address of the variable to which it points
What is the difference between pointer vairableandsimple vairablewhat are the advantage of pointer vairable?
A simple variable is a variable that stores a value, while a pointer variable is a one that points to a location where a value can be stored (It stores the address of a variable).For eg:int a=2,b;b=a;a=3;cout
What is void pointer variable?
A void pointer variable is a pointer variable (of some type) that is assigned the value zero, meaning it points to address zero. Memory address zero is a reserved address, which means the pointer variable references nothing in particular.
Define pointer to pointer in c?
Double (**) is used to denote the double pointer. As we know the pointer stores the address of variable, Double pointer stores the address of any pointer variable. Declaration : int **ptr2Ptr;
What does pointer to pointer finger mean?
yea that's why its called the point FINGER
How are pointer different from other variables?
A pointer variable is a variable that contains the memory location of another variable or an array (or anything else in memory). Effectively, it points to another memory location. For standard variables, you define a type, assign a value to that variable or read the value from it, and you can also read the memory location (&n = memory location of n) of the variable. For pointers, you can point them to any variable, even another pointer, and you can get the value of the variable it points to (*p), the location of that variable in memory (p), or the address in memory of the pointer itself (&p). Consider: long n = 65; long *p; p = &n; Results: Type | Name | Location | Value long n 0xA3FF 65 long * p 0x31DF 0xA3FF So p points to n. Now, n = 65 &n = 0xA3FF p = 0xA3FF *p = 65 &p = 0x31DF You may find yourself having to use typecasts frequently when using pointers. Pointers are useful when passing data to functions. For instance, consider the following function: void add(int a, int b, int c) { c = a + b; } The problem here is that the computer copies each variable into a new memory location before passing them to the function as local variables. This function effectively does nothing. However, if you change the function to: void add(int a, int b, int *c) { c = a + b; } and call the function by passing in the location of the variable to the function: add(a,b,&c); then you can modify the variable itself. Pointers are also good for working with arrays: char *c = "Hello World"; int i=0; while (c[i] != 0x00) { cout << c[i]; c++ } //print one letter at a time.
