im a new learner, please help and elaborate this.

code in c++ using DevC++

1. solve without function.

2. add the function (with & without sending back the output to main) then add the data file.

Write code to solve the following equation: distance=(side1)2+(side2)2 Get the input from the user/keyboard. Calculate the distance in a programmer define function and return the value to the main function. Print the output in the main function