Pointers in C - C Pointers
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Pointers
- A pointer is a variable which contains the address in memory of another variable. We can have a pointer to any variable type.
- The unary or monadic operator & gives the “address of a variable”.
- A pointer references a location in memory, and the value stored at that location is known as dereferencing a pointer.
- The indirection or dereference operator * gives the “contents of an object pointed to by a pointer”.
Syntax
int *pointer; // declaring pointer
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Sample Code
#include <stdio.h>
int main()
{
int x=10;//integer variable
int *ptrX;//integer pointer
ptrX=&x;
printf("Value of x: %d\n",*ptrX);
return 0;
}
Output
Value of x: 10