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how to parse several arguments using command line arguments

开发者 https://www.devze.com 2023-03-01 06:31 出处:网络
i am writing a command line utility in which i want to parse several arguments: right now i am not reading data from address(so please don\'t get confuse by -addr); my primary objective is to design t

i am writing a command line utility in which i want to parse several arguments: right now i am not reading data from address(so please don't get confuse by -addr); my primary objective is to design the framework so that i can parse several arguments as follows.

filename read -addr value -addr2 value2 -addrN valueN -length value -range value -length2 value2 -lengthN valueN -width value -width2 value2 -widthN valueN

the N can have a maximum value of 64 and minimum value of 1.

Please give some valuable suggestions so that i can d开发者_JAVA百科o it. Thanks


consider using the Getopt library or some of its modifications, it can make yout life easier.

http://www.boost.org/doc/libs/1_41_0/doc/html/program_options.html


The typical main() prototype goes like this:

int main(int argc, char** argv) {
   // stuff
}

When your program is executed from a command-line, argc will be the total count of your arguments, plus one for the name of the program itself; and you can think of argv as an array of strings containing the arguments.

Knowing argc, parsing the argument list should be easy :)

Edit: a short example, just in case.

int main(int argc, char** argv) {
    printf("%d\n", argc);
}

Then, on your cl:

./program asd asd asd
4

argv[0] is "program", argv[1] is "asd", etc.

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