lab 1

What is the purpose of argc in the main function's argument list in a command-line arguments program?

• It stores the total number of command-line arguments passed to the program.

• It points to the first argument passed to the program.

• It stores the program's executable name.

• It holds the value of the first argument passed to the program.

Which of the following statements correctly describes argv in the main() function?

• argv is an integer variable that stores the number of command-line arguments.

• argv is a pointer to an array of strings (character pointers) that hold the command-line arguments.

• argv is a function that retrieves command-line arguments from the user.

• argv is a single string that holds all the command-line arguments concatenated.

What does argv[0] typically contain in a C program that uses command-line arguments?

• The first argument passed by the user.

• The total number of command-line arguments.

• The name or path of the executable program.

• The last argument passed by the user.

Given the following command: ./myProgram arg1 arg2 What would be the value of argc?

• 1

• 2

• 3

• 4

Which of the following correctly accesses the second command-line argument passed to a C program?

• argv[0]

• argv[1]

• argv[2]

• argv[argc - 1]

How would you convert a string passed as a command-line argument to an integer in C?

• Use the strcat() function.

• Use the atoi() function.

• Use the strlen() function.

• Use the strcpy() function.

If a C program is executed with the following command: ./myProgram 10 20 What is the correct way to access the value "20" in the program?

• argv[0]

• argv[1]

• argv[2]

• argv[3]

If a user forgets to provide command-line arguments when running a program that expects them, what will typically happen?

• The program will crash immediately.

• The program will read from stdin instead.

• argc will be less than expected, and accessing argv elements may result in undefined behavior.

• The program will automatically fill argv with default values.

What would the following program print if executed with the command ./program Hello World? #include int main(int argc, char *argv[]) { printf("%s %s\n", argv[1], argv[2]); return 0; }

• Hello World

• ./program Hello

• Hello

• World

How would you handle an error if the user does not pass enough command-line arguments to a program?

• By checking if argv contains a null pointer.

• By checking if argc is less than the expected number of arguments.

• By using a try-catch block.

• By printing a warning message from the operating system.