Write the definition of a void function with three reference parameters of type int, double, and string. The function sets the values of the int and double variables to 0 and the value of the string variable to an empty string.

Write the definition of a void function that takes as input three parameters of type int, say sum, prod, and num. The function updates the value of sum by adding the value of num, and the value of prod by multiplying the value of num. The new values of sum and prod are reflected in the calling environment.

Write the definition of a function that takes as input the three numbers. The function returns true if the first number to the power of the second number equals the third number; otherwise, it returns false. (Assume that the three numbers are of type double.)