This is c++

1. Request an uppercase letter. Output the lowercase equivalent using explicit casting. Comment each step of the algorithm in your program. Example Output (input in bold and italics) Input an uppercase character: J The lowercase equivalent is ' j '. 2. Rewrite program one such that the conversion and output are handled in a single line of code. 3. Request two floating-point values from the console. Output the sum of only the integer portion of both values. Example Output (input in bold and italics) Enter a floating-point value: 12.56 Enter a floating-point value: 35.64 Sum of the integers: 47