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Q: If a program is invoked with "python program.py -r input.dat output.dat", what are the elements of argv?

There are four choices:

A. argv[0]: "-r input.dat output.dat"

B.argv[1]: "-r"
argv[2]: "input.dat"
argv[3]: "output.dat"

C.argv[0]: "program.py"
argv[1]: "-r"
argv[2]: "input.dat"
argv[3]: "output.dat"

D.argv[0]: "-r"
argv[1]: "input.dat"
argv[2]: "output.dat"

Respuesta :

problemsolver2019

Answer:

C

Explanation:

C.argv[0]: "program.py"

argv[1]: "-r"

argv[2]: "input.dat"

argv[3]: "output.dat"

is the right answer. as 0 argument is always the script. We can find this by importing sys and using the command sys.argv. And like len(sys.argv) will give total number of arguments.  

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