CISC 1600 Lecture Notes - Lecture 19: Function Prototype, Global Variable, Local Variable
22 Mar 2017
School
Department
Course
Professor
Document Summary
Defined within a function or block and is redefined each time function is called. Scope = from the variable def to the end of the function, accessible only within the function or block. Other functions can define variables with the same name. When a function is called, local variables in the calling function are not accessible from within the called function. Lose their contents when function terminates (in contrast to static that keeps them) Outside the bound of all the functions. Scope (domain)= from the variable definition to the end of the entire program, accessed by all function. Not easy to use for other programs (lots of modification) Constant is fine initialized to 0 (numeric) or null (character) Not available / override by local variable if the local variable shares the same name. //this program shows that variables defined in a function are hidden from other functions. #include using namespace std; void anotherfunction(); // function prototype int main()
