| Fortran Variables A quantity which may vary during program execution is called a variable. Variables names are name tags of memory location where numbers are stored. A number stored in a memory location with an integer variable name is an integer and one stored in a location with a real variable name may have a fractional part. A variable must have a name. One variable name may consists maximum of up to six characters. First character of a variable must be an alphabet. Special characters like &, #, $, etc are not allowed in variable name. Blank spaces in a name are ignored. | ||||||||||||
| Example: | ||||||||||||
| THETA MATRIX HEIGHT |
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| From this example it should be clear that the value of THETA, MATRIX and HEIGHT may vary according to the program. | ||||||||||||
| Following Points should keep in mind while declaring Variable: | ||||||||||||
| · A variable must have a name. | ||||||||||||
| · One variable name may consists maximum of up to six characters. | ||||||||||||
| · First character of a variable must be a letter. | ||||||||||||
| · Special characters like &, #, $, etc are not allowed in variable name. | ||||||||||||
| · Blank spaces not allowed in variable name. | ||||||||||||
| Variables can be easily understand by this table: | ||||||||||||
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