command line arguments

This is a discussion on command line arguments within the C++ Programming forums, part of the General Programming Boards category; if "fcfs characters.txt" is entered in the command line i have infile.open(argv[2]) to open the file which works correctly but ...

  1. #1
    Registered User
    Join Date
    May 2009
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    30

    command line arguments

    if "fcfs characters.txt" is entered in the command line i have infile.open(argv[2]) to open the file which works correctly but how do i put argv[1] in an if statement? like
    Code:
    if (argv[1] =="fcfs"){do something}
    this line compiles but doesnt do what i tell it to. how do i fix this. What data type is read in from the command line? string? c style string?

  2. #2
    Sweet
    Join Date
    Aug 2002
    Location
    Tucson, Arizona
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    1,807
    You can do one of to things. I personally would use the first one.
    Code:
    std::string firstArgument = argv[1];
    
    if(firstArgument == "fcfs"){//do something}
    or
    Code:
    if(strcmp(argv[1], "fcfs") == 0){//do something}
    Woop?

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