three C code!1. Write a C program to ask user to enter a value of the wattage of a light bulb “w” and then the value and the brightness of the light will be displayed.2.To print out all different possibilities of obtaining 20 pounds using coins of value 2 pence, 5 pence, and 10 pence.3.The program asks the user to type a value between 1 and 4. If the user types a value from 1 to 3 the operation is computed, the integer is written and the menu is displayed again. If the user types 4, the program quits. If the user types other values, there is no operation on the integer, and the integer is written and the menu is displayed again.

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2.c
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