In this challenge, we're practicing reading input from stdin and printing output to stdout. In C++, you can read a single whitespace-separated token of input using cin, and print output to stdout using cout. For example, let's say we declare the following variables:and we want to use cin to read the input "High 5" from stdin. We can do this with the following code: The above code reads the first word ("High") from stdin and saves it as string , then reads the second word ("") from stdin and saves it as integer . If we want to print these values to stdout, we write the following code: The above code prints the contents of string , which is the word "High". Then it prints a single space (), followed by the contents of integer . Because we also want to ensure that nothing else is printed on this line, we end our line of output with a newline via endl. This results in the following output: Read numbers from stdin and print their sum to stdout. Note: If you plan on completing this challenge in C instead of C++, you'll need to use format specifiers with printf and scanf. A single line containing space-separated integers: , , and . Print the sum of the three numbers on a single line.