An explicit declaration is a program statement used for declaring the types of variables (a statement in a program that lists variable names and specifies their types)

An explicit declaration is a program statement used for declaring the types of variables (a statement in a program that lists variable names and specifies their types).

• An explicit declaration is a program statement used for declaring the types of variables (a statement in a program that lists variable names and specifies their types).
• Ex. int sum=0; (most language require explicit dec.)
• An implicit declaration is a default mechanism for specifying types of variables (the first appearance of the variable in the program).

(means of associating variables with types through default conventions. )

• •An identifier not explicitly declared is implicitly declared according to the

following convention :

• –Identifiers beginning with I, J, K, L, M, or N are implicitly declared to be Integer type
• – Otherwise, they are Real type.

• done through explicit or implicit declaration.

• How is a type specified?

• Example of : Implicit Declaration in Fortran