Unit 1 - Structure of C

What is the entry point of a C program?

• start()

• begin()

• init()

• main()

What is the purpose of the #include directive in a C program?

• To declare variables

• To define functions

• To include header files

• To start the execution of the program

Which section of a C program contains global variable declarations?

• Preprocessor directive section

• Definition section

• Global declaration section

• Main section

Which of the following is not a valid section of a C program?

• Documentation section

• Definition section

• Compilation section

• Subprogram section

The return 0; statement at the end of the main() function signifies:

• Program failed

• Program returned nothing

• Program ended successfully

• Program entered an infinite loop

Which section includes user-defined functions?

• Preprocessor section

• Subprogram section

• Main section

• Header section

What is the purpose of the Link Section in a C program?

• To write the main logic of the program

• To declare variables

• To include header files and link external libraries

• To define user-defined functions

What happens if you forget to include <stdio.h> and use printf()?

• The program will run normally

• The compiler will throw an error

• The program will crash during execution

• The function will work with a warning only