How to denote ./caesar with argv[0]

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int main(int argc, string argv[])
{
./caesar = argv[0];

With argv[0], I intend to make sure that this performs ./caesar command when entered through command line interface.

Kindly guide how to correct as the above code showing error while compiling.

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Reply

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You don’t need to make sure that your program starts with “./caesar” … if the user starts the program with something else, then your program simply will not start 🙂

But comparing two strings can be done with strcmp(), check how to use in the manual pages: https://manual.cs50.io/. You cannot compare two strings with ‘==’, you will learn later why not.

Also, a string needs to be enclosed in ” …”

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Query

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Okay, understood that not to include ./caesar = argv[0] for argv[0].

But not clear what then I should include for argv[0].

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Reply

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You don’t include anything for argv[0]. It will always be the name of the program. It will be ./caesar (or the absolute path to it) unless the user renames the executable and there’s no reason to prevent them from doing that.

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Query

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Okay, then no need to include argv[0] as part of the main body.

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