Write a program that prompts the user to enter the lower and upper bounds of n intervals, finds and prints the sum of the n intervals. The sum of two intervals is defined as in the following: [a, b] + [c, d] =[a+b,c + d]. Sample input/output: Enter the number of intervals: 6 Enter the lower and upper bounds of the interval: 4 8 Enter the lower and upper bounds of the interval: 2 7 Enter the lower and upper bounds of the interval: 5 9 Enter the lower and upper bounds of the interval: 1 9 Enter the lower and upper bounds of the interval: 2 4 Enter the lower and upper bounds of the interval: 5 7 The sum of the 6 intervals is [19, 44]