procedure declaration
Computing term for declaring a procedure (subroutine) in a program, specifying its name, parameters, and return type.
In this language, you write the body after the procedure declaration.
You need to specify the argument types in the procedure declaration.
関数宣言 is a function declaration, which returns a value, while 手続き宣言 is a procedure declaration, which may not return a value.
Compound of 手続き (procedure) and 宣言 (declaration), a direct translation of the English computing term.