write a C$-$program, convert, that reads decimal integers $($you can assume non$-$

negative values$)$ from standard$-$in $($a$.$k$.$a$.,$ the keyboard$)$ and prints the representation of each

value in either hex or binary. The program will continue to read values until reaching the end$-$

of$-$file signal. What is the end$-$of$-$file for the keyboard? Control$-$D$.$ We use control characters so

often, control is usually written with a carrot. For example, $^$D