Fortran Tutorial

Fortran is a high level programming language which means Formula Translation and is widely used for numerical operations. Fortran language is the first high level programming language among all the languages. Persons with little mathematical background can learn this …

Usage of FORTRAN 1. This is widely used at space research centers, DRDO, NASA, ISRO and many of University like Cambridge, Department of Engineering etc. 2. FORTRAN Used commercially for technical and scientific computations. 3. FORTRAN Principal language on …

Differences between Fortran 77 and Fortran 90 and Fortron 95 1) Fortran 90 has more intrinsic functions than Fortran 77, and it adds intrinsic subroutines. The CF90 compiler accepts the following intrinsic functions, which are …

Basics are called the heart of any language. Without basics of any language you cannot imagine about any computer language. Basics of Fortran means how, what, where and which sentence, letters, digits and words can …

A constant is a number which does not change till the end of a program. As we know in algebra 1, 2, 3,………etc are constant which have same value as it is given and cannot …

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 …

Data Data are constants provided to a program for use in computation or processing or execution. Type Means the information determines the way in which it is represented and the operations which may be performed …

Fortran Expressions We have already discussed about constants, integers, variables now we will study about the Fortran Expressions . What is Expression? Expressions are the statements formed by combination of operators and operands. Example: 1) …

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 …

Real Expressions There are following rules to express the Real expressions: 1) A signed or unsigned real variable name or real constant is an expression. Example: -A, 3.8, 2.0 etc. 2) A real expression connected …

Mixed expressions Mixed expressions in Arithmetic Expression are formed by using different types of integer, real, double precision or complex quantities. Example: Consider an arithmetic expression in which integer and real quantities occurs let I=5 …

Relational Logical Expressions are expressed with the help of Relational operators. Relational operators These are the relational operators: Mathematical symbol Meaning Fortran equivalent > greater than .GT. >= greater than or equal to .GE. < …

Input Statement It is necessary for solving a problem on a digital computer that the required data should be transformed from one of its input unit to its memory and this is done by input …

As we know computer is a machine which have no mind. It does not understand our language. Computer have own language which converts our input data into its own language. For computer programming in Fortran …

The WRITE and PRINT statements are the data transfer output statement. The information from the memory unit is delivered to output unit and then the result or the value or the answer is display on …