For this exercise, you're going to be comparing system calls and the library routines you're probably more

accustomed to using. I've written a short program for you, writeLibc.c$.$ You'll find it on the course homepage in

Moodle. This program uses the C standard library to create an output file, output.txt$.$ It uses fputc$()$ to write

more than $1,000,000$ characters to the file, one character at a time, rewinding to the start of the file periodically,

so it doesn't get too large.

Compile this program and time its execution on one of the EOS linux machines. The following commands

should do the job:

$ gcc $-$Wall $-$std$=$c$99$ writeLibc.c $-$o writeLibc

$ time $./$writeLibc

Once you're done with this program, delete the output file it created. This will help you make sure you don't

make mistakes on the next part: