Write a program that finds the first non-repeated char in a string.That is the first char from left toright that does not existtwice in the string. The program should be repeated until the user entersquit. Introduce functions to improve your code clarity.For example, a user inputs the string Hello, the program would print out H and index 0 as thisis the first char thatdoesnot exist twice in the string.If the character is not found in thestring the program outputs Not found.

I can't use any other library functions than iostream and string and iomanip.