Fortran Expression and I/O Statement

Artethematic & Integer Expressions

Arithmetic Expressions

To know about the Arithmetic Expressions first of all we must should know about Arithmetic Operators which is given below:

Operation Fortran operator + Add - Subtract * Multiply / Divide ** Exponentiation

Integer expressions

We know about integers that it have no decimal point. These are expressed as the following rules like:

1) A signed or unsigned integer variable name or an integer constant is an integer expression.

Example:

5, +5, -2, +7, j, -j etc.

2) An integer expression connected by an arithmetic operator to an unsigned integer variable name or an unsigned integer constant is an integer expression.

Example:

- IC * IA +IB

Here IC, IA, IB are unsigned integer variable and -, +, and * are arithmetic operators.

3) An integer expression enclosed in parentheses is an integer expression.

Example:

( -J * K +I) is an integer expression.;

Note: Two arithmetic operators should not occur in succession in an integer expression.

This is wrong to express:

Example:

IC -* IA