I am new to C and would like to ask for help.

Problem:

I have a function that  return a string and I want to rename
a file in a directory with a return string.

Example:

A function return a string "New_file"
I would like rename a file in a directory with new name call "New_file"

What I have in mine is to use the Unix command:

system ("mv "old_file" "New_file");

Would someone show me how to implement this in C.

Thanks in advance,

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Look at the standard library function rename() prototyped in
<stdio.h>.

</Jack>
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