Top 500+  C Language Interview Questions and Answers Pdf - 6

Question: 26

What is a global variable?

The global variable is a variable that is declared outside of all the functions.

The global variable is stored in memory, the default value is zero.

Scope of this variable is available in all the functions.

Question: 27

What is meant by Recursive Function?

If a function calls itself again and again, then that function is called Recursive function.

Question: 28

What is mean by testing?

Testing is the process of executing the program with sample or tested data.

Question: 29

What are the types of testing techniques?

There are two types of testing techniques are:

Human testing

Computer based testing

Question: 30

What are the pre-processor directives?

1. Macro inclusion
2. Conditional inclusion
3. File inclusion