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cargvargc

how to tell when you've reached the end of a C array? (specifically argv)

been asked a question on this, basically coming up with argc...without actually having argc

if your given argv, which as I understand essentially a array of pointers to the relevant char arrays of each inputted argument,

how would I actually go about counting the number of pointers in argv?

Solution

  • The C standard specifies:

    argv[argc] shall be a null pointer.

    So you can always detect the end by testing for 0.