C Programming
What is the difference between a declaration and a definition of a variable?

There is no difference between them.
A declaration occurs once, but a definition may occur many times.
A definition occurs once, but a declaration may occur many times.
Both can occur multiple times, but a definition must occur first.
Both can occur multiple times, but a declaration must occur first.

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C Programming
Which of the following statements are correct about the program below?#includevoid main(){ int size, i; scanf("%d", &size); int arr[size]; for(i=1; i<=size; i++) { scanf("%d", arr[i]); printf("%d", arr[i]); }}

The code is erroneous since the values of array are getting scanned through the loop.
None of these
The code is erroneous since the subscript for array used in for loop is in the range 1 to size.
The code is correct and runs successfully.
The code is erroneous since the statement declaring array is invalid.

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