Write a program, sonar. c that performs the following steps using the provided sysfs_gpio files:a. Include the sysfs_gpio. h fileb. Initializes the TRIGGER pin to be an output by calling gpioOutput()c. Initializes the ECHO pin to be an input by calling gpioInput()d. Sets Trig signal high (1) and then low (0)e. Zero a count variablef. Enter a while loop that waits until the Echo signal goes high There is no code in the while loopg. The program exits the first looph. Enter another while loop that waits until the Echo signal goes lowThe while loop contains code that increments the count variable i. The program exits the second loopj. The count value is now proportional to the distance traveledk. Print the raw count valuel. Convert the value to a distance (cm) by empirical means(the desk is about 4 feet or 122 cm in length)Aside: How can this work