C programming

Question

void main()
{
    int x,y;
     y=10;
    scanf("%d", &x);

}

When memory wil be allocated to the x and y?Compile time or run time?

Comments

@joshi

memory for an array will be allocated at compile time, isn't it?

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here array is also local variable, then why memory will be given to it at compile time.

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@Joshi

Yes, by definition "allocation" means setting aside of memory. And this happens at compile time for all static memory allocation -- which includes stack in C. But the actual memory being created for stack -- not called allocation -- is at runtime. For example, at compile time we can know how much memory a function stack takes. But only during runtime, we can know how many times, that stack is being used by the function like during a recursive call. So, for this exact question answer would be

x and y are allocated memory during compile time on stack and hence not initialized.