A Scalar variable or scalar field which is used for holds one value at a time and is a single component that assumes a range of number or string values. The value of Scalar variable is associated with every point in a space. In C programming languages Scalar data types are commonly used and Scalar data types also may be scalar variables and basic variables used in practical extraction and report language. They are either strings that include symbols and letters or numbers with exponents, integers and decimal values.