Explain Local Static Variables and what is their use?

What is the difference between declaring a header file with < > and ” “?

When should we use the register storage specifier?

Which statement is efficient and why? x=x+1; or x++; ?

Can I declare the same variable name to the variables which have different scopes?

Which variable can be used to access Union data members if the Union variable is declared as a pointer variable?

Mention File operations in C Language.

What are the different storage class specifiers in C?

What is typecasting?

Write a C program to print hello world without using a semicolon (;).

Write a program to swap two numbers without using the third variable.