Function & Pointer


A subprogram is a program unit which performs a particular task and has its own constant variables, labels and statements. It can be tested and compiled separately.

Intrinsic Function or Library Function

An intrinsic function is a built-in function that returns a single value. Prewritten programs that are built-in the computer and available to be used to compute a single value. Intrinsic functions and math subroutines convert values from one data type to another, perform data manipulation, and also perform basic mathematical functions, such as calculating sines, …

Intrinsic Function or Library Function Read More »

External Function

An external function is specified externally to the program unit that references it. An external function is a procedure and may be specified in a function subprogram or by some other means

What is Subroutine ?

Subroutines begin with subroutine name (arg1, arg2,…), then the types of all arguments and local variables should be declared. Subroutines end with the statements return and end. Subroutines are called from another routine with the command call name (arg1, arg2,…). Where it used: If more than one value is to be returned to the main …

What is Subroutine ? Read More »

What is pointer ?

What are Pointers? Pointer is a type of variable which stores other variables called targets. A pointer is a new type of variable which may reference the data stored by other variables (called targets) or areas of dynamically allocated memory. Pointers have been included in Fortran 90, but not in the usual way as in …

What is pointer ? Read More »

Scroll to Top