Command Line Arguments Questions in C

The command line arguments are handled using main() function arguments where argc refers to the number of arguments passed, and argv[] is a pointer array which points to each argument passed to the program.

Eg.

#include

int main( int argc, char *argv[] )  {

   if( argc == 2 ) {
      printf("The argument supplied is %s\n", argv[1]);
   }
   else if( argc > 2 ) {
      printf("Too many arguments supplied.\n");
   }
   else {
      printf("One argument expected.\n");
   }
}

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1.
Which of the following syntax is correct for command-line arguments?

A. int main(int var, char *varg[])
B. int main(char *argv[], int argc)
C. int main()
    {
        int argv, char *argc[];
    }
D. none of the mentioned

Answer: A
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2.
What type of array is generally generated in Command-line argument?

A. Single dimension array
B. 2-Dimensional Square Array
C. Jagged Array
D. 2-Dimensional Rectangular Array

Answer: C
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3.
The first argument in command line arguments is

A. The number of command-line arguments the program was invoked with;
B. A pointer to an array of character strings that contain the arguments
C. Nothing
D. None of the mentioned

Answer: A
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4.
The second (argument vector) in command line arguments is

A. The number of command-line arguments the program was invoked with;
B. A pointer to an array of character strings that contain the arguments,one per string.
C. Nothing
D. None of the mentioned

Answer: B
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5.
What is the output of this C code (run without any commandline arguments)?

    #include
    int main(int argc, char *argv[])
    {
        while (argc--)
        printf("%s\n", argv[argc]);
        return 0;
    }

A. Compile time error
B. Executablefilename
C. Segmentation fault
D. Undefined

Answer: B
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