Initialization of Pointer in C : Initializing Pointer

Prerequisite :

Address Operator in C programming

How to Initialize Pointer in C Programming ?

pointer = &variable;

Example :

#include<stdio.h>
int main()
{
int a = 10;
int *ptr;

ptr = &a;
return(0);
}

Explanation :

• Pointer should not be used before initialization.
• “ptr” is pointer variable used to store the address of the variable.
• Stores address of the variable ‘a’ .
• Now “ptr” will contain the address of the variable “a” .

Note :

Pointers are always initialized before using

Example : Initializing Integer Pointer

#include<stdio.h>
int main()
{
int a = 10;
int *ptr;

ptr = &a;
printf("\nValue of ptr : %u",ptr);

return(0);
}

Output :

Value of ptr : 4001

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