please show work

Consider the Sum program from class that is designed to read numbers from the keyboard and print their sum to the 5 . creen. Write a command to run this program so that it reads the numbers from a file named numbers.txt instead of from the keyboard AND prints the result to a file named result, txt instead of to the screen. In other words, we want to redirect the input and the output. Consider the Sum program from class that is designed to read numbers from the keyboard and print their sum to the s. creen. Write a command to run this program so that it prints the result to a file named result.txt instead of to the screen. In other words, we want to redirect the output. (The input should come from the keyboard.) Consider the Sum program from class that is designed to read numbers from the keyboard and print their sum to the s creen. Write a command to run this program so that it reads the numbers from a file named numbers.txt instead of from the keyboard. In other words, we want to redirect the input. (The output should still go to the screen.)