Setting a char array from the struct with another char array

Question

I have the struct:

struct person {
    char firstname[];
};

And the method:

void abcde (person* a, char firstchar[]) {
    a->firstname = firstchar;
}

The gcc throws this:

incompatible types in assignment of char*' tochar[0u]'

How to solve this problem? Thanks for help!

Shouldn't you have struct person * a as the formal parameter? You are missing struct. — unxnut
– unxnut, Commented May 25, 2013 at 21:53

Elazar · Accepted Answer · 2013-05-25 21:43:42Z

2

You cannot assign to an array. you want either a pointer, or copy the content of one into another.

struct person {
    char* firstname;
};

void abcde (person* a, char firstchar[]) { 
    a->firstname = firstchar;
}

firstchar in the function parameters is a pointer, not an array! the [] is merely a syntactic convenience. This is not the case for char firstname[];, which is an array.

answered May 25, 2013 at 21:43

Elazar

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