C Programming
Which of the following statements should be used to obtain a remainder after dividing 3.14 by 2.1 ?

rem = fmod(3.14, 2.1);
rem = 3.14 % 2.1;
Remainder cannot be obtain in floating point division.
rem = modf(3.14, 2.1);

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

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

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