12th Class Computer Science Chapter 13 Short Questions with Answers Online Preparation

Question # 1

Ans 1: All variables that we have declared so far are declared within a block - that is, within the extent of a pair of curly braces. These are called local variables is form the point in the program where it is declared until the end of the block containing its declaration .

Question # 2

Ans 1: The lifetime of global variable is until the termination of the program. They exist in memory from the start to the end of the program.

Question # 3

Question # 4

Ans 1: Local Variable: All variables that we have declared so far are declared within a block - that is, within the extent of a pair of curly braces. These are called local variables is form the point in the program where it is declared until the end of the block containing its declaration .
Ans 2: Global Variable: The variable which are declared outside all blocks i.e outside the main ( ) and all other functions,. The scope of a global variable is form the point where they are declared until end of the file containing

Question # 5

Ans 1: There are two types of function in C language.
- Built-in Function
- User-defined Function

Question # 6

Ans 1: Scope of Global Variables: They are accessible from the point where they are declared until end of the file containing them. It means they are visible throughout all the functions in the file, following their point of declaration. The life time of global variable is until the termination of the program. They exist in memory from the start to the end of the program.

Question # 7

Question # 8

Ans 1: The scope or lifetime of a local variable is from the point in the program where it is declared until the end of the block containing its declaration

Question # 9

Ans 1: Variables declaration and the program logic are implemented in the function body. Function body makes use of the arguments passed to the function. It is enclosed in curly braces. A function can be called in the body of another function.

Question # 10