C – Special Operators | ProjectBandya

Special Operators in C:

Below are some of special operators that C language offers.

S.no	Operators	Description
1	&	This is used to get the address of the variable. Example : &a will give address of a.
2	*	This is used as pointer to a variable. Example : * a where, * is pointer to the variable a.
3	Sizeof ()	This gives the size of the variable. Example : size of (char) will give us 1.

**Example program for & and * operators in C:**

In this program, “&” symbol is used to get the address of the variable and “*” symbol is used to get the value of the variable that the pointer is pointing to. Please refer C – pointer topic to know more about pointers.

#include <stdio.h>

int main()
{
int *ptr, q;
q = 50;
/* address of q is assigned to ptr */
ptr = &q;
/* display q’s value using ptr variable */
printf(“%d”, *ptr);
return 0;
}

Output:

Example program for sizeof() operator in C:

sizeof() operator is used to find the memory space allocated for each C data types.

#include <stdio.h>
#include <limits.h>

int main()
{
int a;
char b;
float c;
double d;
printf(“Storage size for int data type:%d \n”,sizeof(a));
printf(“Storage size for char data type:%d \n”,sizeof(b));
printf(“Storage size for float data type:%d \n”,sizeof(c));
printf(“Storage size for double data type:%d\n”,sizeof(d));
return 0;
}

Output:

Storage size for int data type:4

Storage size for char data type:1
Storage size for float data type:4
Storage size for double data type:8

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