Recall & Review
beginner
What is the purpose of the
main function in a C program?The
main function is the starting point of a C program. When you run the program, the computer begins executing instructions from main.Click to reveal answer
beginner
What does the signature
int main(void) mean?int main(void) means the main function takes no arguments and returns an integer value to the operating system, usually 0 to indicate success.Click to reveal answer
beginner
Why do we return 0 at the end of the
main function?Returning 0 tells the operating system that the program finished successfully. Other values can indicate errors.
Click to reveal answer
beginner
Can a C program have more than one
main function?No, a C program must have exactly one
main function. It is the unique entry point for the program.Click to reveal answer
beginner
What happens if you omit the
main function in a C program?The program will not compile or link because the system does not know where to start executing instructions.
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What is the role of the
main function in a C program?✗ Incorrect
The
main function is where the program starts running.What does the return value of
main usually indicate?✗ Incorrect
Returning 0 usually means success; other values indicate errors.
Which of these is a valid signature for the
main function?✗ Incorrect
int main(void) is the standard valid signature.What happens if a C program has no
main function?✗ Incorrect
The program must have a
main function to compile and run.Can a C program have multiple
main functions?✗ Incorrect
Only one
main function is allowed as the program entry point.Explain the role of the
main function in a C program and why it is important.Think about where the computer starts running your code.
You got /4 concepts.
Describe what happens if you forget to include a
main function in your C program.Consider how the system knows where to start.
You got /3 concepts.