C programming language text: computer science a structured programming approach using C, third edition ch: 1-6 A Boiler Number for an integer x is the sum of all values from 1 to x. Given a range of positive integer values starting at y and continuing to z, display the Boiler Number for each value in the range. Example Execution #1: Enter starting value: 1 Enter ending value: 5 Boiler Numbers [1, 5]: 1 3 6 10 15 Example Execution #2 (input validation requirement, ending value must be greater than the starting value): Enter starting value: 37 Enter ending value: 30 Error! Ending value must be > 37 Enter ending value: 37 Error! Ending value must be > 37 Enter ending value: 40 Boiler Numbers [37, 40]: 703 741 780 820 Example Execution #3 (input validation requirement, starting value must be positive): Enter starting value: 0 Error! Starting value must be positive! Enter starting value: -1 Error! Starting value must be positive! Enter starting value: 15 Enter ending value: 17 Boiler Numbers [15, 17]: 120 136 153 The use of arrays are not permitted on this assignment For this assignment you will be required to implement the user-defined functions (from chapter 4). With our ability to implement user-defined functions only the following will be permitted in the main function: Declaration of variables to be passed to functions. Calls to user-defined functions by main. A limited amount of control structures (see chapters 5 and 6) to retain the previous two tasks within the main function.