c++

QUESTION 18 Write code inside main function. No need to write the header of main function or include libraries. (1) Declare numbers a, b, and c as double type. Enter values for a, b, and C. (2) If the sum of any two of a, b, cis NOT larger than the third one, exit main function. (3) Otherwise (the sum of any two of a, b, c is larger than the third one), calculate atbtc plo-a)(0-b)(0-c), wherepis 2. (4) Print out the above value. Hint: you may use sqrt function to calculate square root