'A C program that ,given a structure definition, generates a function to allocate and initialise this structure

I found this exercise in an old book on C data structures and it gave the following problem prompt:

Write a program that, given a structure definition, will generate a C function that allocates and initializes the structure (such a function is called a "constructor"). For example, given the input:

struct complex
{
    double real;
    double imaginarry;
}

function create_complex() will be created having two arguments of type double.

I tried thinking of how to create such a program and my only solution is to use a file to get the struct input and create a new text file in which I write the function.

Is there any other way to approach this problem? I appreciate it.

c metaprogramming code-generation

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'A C program that ,given a structure definition, generates a function to allocate and initialise this structure

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