Case insensitive string compare: [40 marks/ write a function that compares two strings while ignoring the case of alphabetical characters. your program will take two strings as input from the user and use your function to compare them. assume a maximum c-string size of 1000 characters. make sure your code works for any input number, not just the test cases. your code will be tested on other test cases not listed here. properly comment your code before submission for this part of the assignment, name your source file as string compare_wsuid. cpp. for example, if your user id is a999b999 name your file as string compare_a999b999.cpp. sample test cases: test case 1: input: first string: hello world second string: hello world test case 2: input: first string: 5 apples second string: 5 apples output: strings are the same output: strings are the same test case 3: input: first string: 5 apples second string: 6 apples test case 4: input: first string: hello world second string: how are you? output: strings are not the same output: strings are not the same