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Functions - Programming

Q1:

Which of the following statements are correct about the function? 
long fun(int num)
{
    int i;
    long f=1;
    for(i=1; i<=num; i++)
        f = f * i;
    return f;
}

A The function calculates the value of 1 raised to power num.

B The function calculates the square root of an integer

C The function calculates the factorial value of an integer

D None of above

ANS:C - The function calculates the factorial value of an integer

Yes, this function calculates and return the factorial value of an given integer num.