Thread: lab sensor problem in c

Hi everyone
I've got to write a program in c that
monitor the usage of a laboratory at your university
i need to take the following into consideration:

1. Initialisation: At Power Up if there are some students inside the lab, the software should allow you to set this number as initial condition.
2. If a student crosses one sensor BUT not the other THEN the count does not change and an error code is generated.
3. You should allow for the lab supervisor to store MAXIMUM, MINIMUM and TOTAL number of students inside the laboratory for readings taken during one full day. As there are a number of lab sessions during any one day, your system should record each separate session.

the 1 st and 2nd part is done however
My only problem and the one holding me up currently is the 3rd part is how to record each seperate session.
Im not asking for someone to give me the code ready but some hints on how to do it will be perfect thank you.

Originally Posted by MK27

Write the information into files. Eg, you could create a directory and use one for each session. Maybe use the date as part of the name, so these records could be easily kept and sorted if desired. Better yet, just put the value from time(NULL) into a string, these will be unique (as long as you don't write two such files in the same second) and can easily be converted to a precise date and time. Then an identifying suffix, eg ".labsession"

thank you for ur help .i need to dig little bit in mkdir()funtion as i never heard of it before because its my first time writing in c language if you have any example on making directories and files in c will be much apreciated
thanks again.