As studied earlier, Operators are the symbols, which performs operations on various data items known as operands. For Example: in a a+b, a and b are operands and + is an operator.
Note:- To perform an operation, operators and operands are combined together forming an expression. For example, to perform an addition operation on operands a and b, the addition(+) operator is combined with the operands a and b forming an expression.
In C programming the special operators are mostly used for memory related functions.
| Operators | Description |
|---|---|
| & | This is used to get the address of the variable. Example: &a will give address of a. |
| * | This is used as pointer to a variable. Example: *a where, * is pointer to the variable a. |
| Sizeof () | This gives the size of the variable. Example: size of (char) will give us 1. |
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.
value is: 20