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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 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 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 stdc 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:
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 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 stdc 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:
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