Please help me with A+B, A-B, A*B and A/B

CIS 1275 C++ Programming Part I            Program 5 Rock, Paper Scissors   You should do these test cases before you start coding!  Check the logic your program is using.  You can use these test cases to verify that your program is giving you correct results.   TestCase:                    Set the seed for rand as 123.                                     First, select 1, rock.  The computer selects scissors.  You win.                                     Then, select 2, paper.  The computer selects rock.  You win.                                     Program says you won the game, do you want to play another?                                     You say yes.                                     Select 3, scissors.  The computer selects rock.  You lose.           Your hand calculations should match your program results when these cases are run!

String to integer ATOI (requires use of INT_MAX and INT_MIN): Implement the myAtoi(string s) function, which converts a string to a 32-bit signed integer (similar to C/C++'s atoi function). The algorithm for myAtoi(string s) is as follows: Read in and ignore any leading whitespace. Check if the next character (if not already at the end of the string) is '-' or '+'. Read this character in if it is either. This determines if the final result is negative or positive respectively. Assume the result is positive if neither is present. Read in next the characters until the next non-digit character or the end of the input is reached. The rest of the string is ignored. Convert these digits into an integer (i.e. "123" -> 123, "0032" -> 32). If no digits were read, then the integer is 0. Change the sign as necessary (from step 2). If the integer is out of the 32-bit signed integer range [-231, 231 - 1], then clamp the integer so that it remains in the range. Specifically, integers less…

Write regular expressions for following languages a) Set of binary numbers that have multiple of 4 1%. E.g., 0000, 010111, 111111110. b) Set of binary strings starting with 11 and ending with 00. E.g., 1100,1110100,1100100