write a C program that creates a pipe for communication between a child process and the parent process. The child process must read a positive number from the keyboard and place it in a variable called x. Then the child must start displaying numbers starting at 1 up to the value x to the monitor. There must be a 1 second delay after each display. The child must then send x to the parent. After the parent waits for the child. It should read the pipe and the value x. The parent process should start displaying values from x to 2*x with no delay in between