Help with C program on Linux


I am working one of C program which prompts the user to enter a hexadecimal value, multiplies by ten, then displays the result in hexadecimal. And my main function should:

a) declare a char array
b) call the readln function to read from the keyboard,
c) call a function to convert the input text string to an int,
d) multiply the int by ten,
e) call a function to convert the int to its corresponding hex text string,
f) call writestr to display the resulting hexadecimal text string.

I have been working on it for forever now and I am like done with it, please please please if somebody would sent me a message regarding this, than I would really appreciate it.

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