Student Chronicles

File Manipulation

Tue, 03 Feb 2009 07:37:01 +0000

/*************************************************************************/
/* Description : This program performs several file system operations    */
/*               like displaying contents of file, renaming, deleting and*/
/*               copying of files.                                       */
/*************************************************************************/

#include
#include

using namespace std;

bool fileValid(char filename[]);
bool fexists(char filename[]);
void displayFile(char *filename);
void renameFile(char *filename, char *newName);
void copyFile(char *filename, char *newName);
void deleteFile(char *filename);

/*************************************************************************/
/* Purpose      : Displays the menu and asks for the user input          */
/* Parameters   : none                                                   */
/* Return value : none                                                   */
/*************************************************************************/
void main() {
int input = 0;

char filename[256], filename2[256];

do
{
cout << “\n\n\n”;
cout << “[1] Display File” << endl;
cout << “[2] Rename File” << endl;
cout << “[3] Copy File” << endl;
cout << “[4] Delete File” << endl;
cout << “[0] Exit” << endl << endl << endl;
cout << “Command >> “;
cin >> input;

switch (input)
{
case 1:
cout << “[ VIEW ] Enter filename: “;
cin >> filename;
displayFile(filename);    // displays the contents of the file
break;
case 2:
cout << “[ RENAME ] Enter filename: “;
cin >> filename;
cout << “[ RENAME ] Enter new filename: “;
cin >> filename2;
renameFile(filename, filename2);    // renames the file
break;
case 3:
cout << “[ COPY ] Enter filename: “;
cin >> filename;
cout << “[ COPY ] Enter new filename: “;
cin >> filename2;
copyFile(filename, filename2);    // copies the file
break;
case 4:
cout << “[ DELETE ] Enter filename: “;
cin >> filename;
deleteFile(filename);    // removes the file
break;
default:
system(”exit”);
}
} while (input < 5 && input > 0);
}

/*************************************************************************/
/* Purpose      : Checks if the filename is valid (.txt)                 */
/* Parameters   : filename                                               */
/* Return value : boolean, true if file is valid, false if not           */
/*************************************************************************/
bool fileValid(char filename[])
{
if( strcmp(”.txt”, strrchr(filename, ‘.’)) == 0)
return true;
else
return false;
}

/*************************************************************************/
/* Purpose      : Checks if the file exists.                             */
/* Parameters   : filename                                               */
/* Return value : boolean, true if file exists, false if not             */
/*************************************************************************/
bool fexists(char filename[])
{
ifstream ifile(filename);
return ifile;
}

/*************************************************************************/
/* Purpose      : Displays the contents of a file.                       */
/* Parameters   : filename                                               */
/* Return value : none                                                   */
/*************************************************************************/
void displayFile(char *filename)
{
char command[256];
if( !fileValid(filename) )
cout << “File type not supported.” << endl << endl;
else if ( !fexists(filename) )
cout << “File does not exist.” << endl << endl;
else {
cout << “\n\n”;
strcpy(command, “type “);
strcat(command, filename);
system(command);
}
}

/*************************************************************************/
/* Purpose      : Renames a file.                                        */
/* Parameters   : filename - the filename to be renamed                  */
/*                newName - the new filename                            */
/* Return value : none                                                   */
/*************************************************************************/
void renameFile(char *filename, char *newName)
{
char command[256];
if( !fileValid(filename) )
cout << “File type not supported.” << endl << endl;
else if ( !fexists(filename) )
cout << “File does not exist.” << endl << endl;
else if ( !fexists(newName) )
cout << “File already exists.” << endl << endl;
else {
strcpy(command, “ren “);
strcat(command, filename);
strcat(command, ” “);
strcat(command, newName);
system(command);
}
}

/*************************************************************************/
/* Purpose      : Copies a file to a desired filename                    */
/* Parameters   : filename - the filename to be copied                   */
/*                newName - the target filename                         */
/* Return value : none                                                   */
/*************************************************************************/
void copyFile(char *filename, char *newName)
{
char command[256];
if( !fileValid(filename) )
cout << “File type not supported.” << endl << endl;
else if ( !fexists(filename) )
cout << “File does not exist.” << endl << endl;
else {
strcpy(command, “copy “);
strcat(command, filename);
strcat(command, ” “);
strcat(command, newName);
system(command);
}
}
/*************************************************************************/
/* Purpose      : Removes a file from the file system                    */
/* Parameters   : filename - the filename to be deleted                  */
/* Return value : none                                                   */
/*************************************************************************/
void deleteFile(char *filename)
{
char command[256];
if( !fileValid(filename) )
cout << “File type not supported.” << endl << endl;
else if ( !fexists(filename) )
cout << “File does not exist.” << endl << endl;
else {
strcpy(command, “del “);
strcat(command, filename);
system(command);
}
}

I’m loaded with work

Tue, 04 Dec 2007 15:33:48 +0000

Yes. I’m busy these days. I’m over loaded with work. I’m working on several ONLINE and OFFLINE projects of the moment. I have lots of activities to attend and manage.

I’m waiting for my Christmas Vacation to do away with these stuff. Hahay.

Our class is similar to a seminar session

Estudyante — Wed, 14 Nov 2007 03:30:21 +0000

It seems weird that our class’ ambiance is similar to a seminar’s ambiance. Projector on. Laptops on. Handout on. Voice Over on. It’s like hearing Microsoft Sam reading the display on the powerpoint presentation. This routine goes on for the whole semester. Half of our day will be trashed with the teacher.

Yeah! You got it right. Voice Over on. Seems like the teacher is not giving any relevant discussion about the topic. I read my notes, you listen.

I’m just hoping we could get something from his readings.

Better study. Self study. Yes study.

Oh God. The teacher rants about our soldering skills. What a shallow basis for checking a project. We’re supposed to make designs rather than getting conscious on our project’s aesthetics. We’re not even here to sell our projects. Why give such a big fuss about it eh?

Miss B, why have you forsaken us? Lead us not into the monstrous boredom.

First week of my last semester

Estudyante — Sat, 10 Nov 2007 16:48:55 +0000

I missed my first day of class because i was busy bumming in Manila. But missing the first meeting is not a big deal any way. In the first place, I was not enrolled yet.

The Ateneo Finanace Office charged me an extra hundred fee for my late enrollment. Great! My schedules were reserved few weeks before but still, they’re charging me for the late enrollment.

The first week in class was not bad at all. I only had ~~two~~ one class last Thursday. I missed the first class because I slept in our office. It was too late that I realized that I already missed my first class in the afternoon. Tuesday and Thursday scheds are the best sched of the week. I have few subjects and a lot of time to b~~um around the campus~~ do my extra school works.

The second class last Thursday was Philosophy. Great! The teacher requires us all to buy a copy of ~~his~~ our book. No photocopying. Everyone is required to buy that PhP 195.00 poorly designed paperback book. He’ll be checking our books by the end of the semester. If I was not mistaken, I heard that he’s going to check the book because he wants to give his personal dedication to the people who bought his book. Yes, it’s his book. Another shameless self-promotion. Is he the cousin of my other teacher?

Since the other teacher was mentioned, the other teacher is again promoting his self creations. One of these is his new blog which according to him will contain the notes he’ll be giving us. I’m wondering if he’s doing this to help us or just to promote and drive traffic for his blog. He might even beat the marketing that I do for Batang Yagit $150 Review Gimik, Civil Engineering Board Exam Results, Wifi in Davao and DCNHS.

Anyway, the real thing will be on Monday. The formal start of classes. I’m just hoping everything will be fine.

School’s not over yet

Estudyante — Tue, 23 Oct 2007 02:28:05 +0000

I thought after finishing the project which my group mates (me? eh.) were working on, everything would be ok. But it’s not the case. I’ll be staying in school for the whole week. We got loads of stuff to work on with Kalasag, Awitenista and my Scholarship.

For Kalasag, we’ll start working on the yearbook. Some people from Cover and Pages in Manila will come to Ateneo to work on some designs we need for the yearbook. We’re having some trouble with yearbook finances. It seems we have to adjust the contract we made, only if the press would allow us to do modifications with the contract. The materials are not even ready yet. We’re still waiting for Bevs to close all accounts and generate the necessary lists before we can proceed with our works.

Awitenista doesn’t seem to progress either. I’ve been busy with other stuff that I have neglected my responsibility as an Awitenista Steering Committee Head. I’ll be working on some advertisement and sponsorship contracts this week. It’s a lot of work specially when you only have a little knowledge on advertising and marketing. Whew!

Scholarship, hmmm.. what scholarship? Yet another to worry about. I still lack 22 hours of service for my scholarship. I need to make up this lacking 22 hours this week before I leave the country this Sunday. I have not checked my grades yet. I’m not even sure what my standing is. Oh no!

October month became too tiring for me to take my gym sessions religiously. I’ve been absent a lot of times. I’m losing my pace now.

Anyway, this week is going to be a busy week.

By the way, for those who need the latest board exam results, you may check my PRC Board Exam Results Archive.

Thank God, Exams no more

Estudyante — Fri, 12 Oct 2007 09:33:26 +0000

After a semester of hard work, the first semester will finally come to an end. The last day of the examination week will be tomorrow. We were so lucky that we have finished our exams last Tuesday.

The first exam we had was the first part of Environmental Engineering which was scheduled last week, a non-exam week schedule. It’s a two part examination. The exam was a bit difficult because it covers all the topics from prelims to finals. We were thankful that the exam was a multiply choice type. At least we won’t get zero. The second was scheduled two days after we had the first part. Few of us were lucky because we were exempted from the later parts of the exam. The group leaders (us) who made the research was exempted to take Tests II and III of the exam since the questions were taken from the research work we made.

The third exam, which was on Broadcasting, was given to us right after the second exam. I didn’t study much on this exam. Most of the questions were essay so I get to answer some. There were enumeration parts also. I was lucky ‘coz I memorized the enumeration part few minutes before the exam.

The fourth exam was on Wireless Communication. The exam was great! (read it with sarcasm). The teacher taught us well so we didn’t had any difficulties answering the questions he gave on the exam (more sarcasm please). It was a worth-taking examination for us (sarcasm explotion here.)

The last exam, which was not so stressful, was on Wire Communications. It’s a multiple-choice type of exam. The topics covered was everything from prelims til finals. Some parts were difficult because it was the first time we encountered it. But the other questions were familiar because it was given in our previous exams.

For the remaining subjects, Control Systems and Wireless Lab, our exam grades will be based on the results of our projects for these subjects. Our project is a do or die factor for our grades. It wold determine if we fail or not. We’re currently working on it now in Bikong’s house. We’re just hoping we could finish this one before Monday. We’re almost done.

Alarm clock with no alarm feature

Estudyante — Fri, 12 Oct 2007 08:43:27 +0000

The last circuit that I worked with was the Microcontroller Project Alarm Clock which was submitted this afternoon. It was supposed to be an alarm clock but we didn’t get to finish the program for the PIC16F84A. We only came up with a digital clock.

We stayed in Eric’s place yesterday to finish the circuit we have started couple of days ago. The first circuit we constructed was rushed because we need to show our hardware last Thursday. We were given until Monday to finish the software, which is quite difficult to program. The circuit we finished was not that good. We have to spend the whole Sunday afternoon to trouble shoot all the faults in the circuit. A lot of the contacts at the back of the circuit were shorted. Opep worked on the trouble shooting task while Eric worked on a new design. (And I went sleeping ‘coz I was not doing anything.)

Around 8pm, we decided to create a new circuit because we thought that the old circuit was hopeless. We had to rush back to school to get the design printed since there were no laserjet printers available nearby. After few hopeful attempts of getting the tracing paper fed into the printer, we were able to print our design.

We used up two cuts of presynsethized boards for the circuit. The first one failed, either the developer solution was too concentrated or the light exposure was not enough. The second one was successful and we were able to start working on the circuit. We stayed there ’til midnight. I was the one who worked on the soldering of the components but I left before midnight and Eric had to finish the project.

We were able to submit the project the following but we didn’t get to finish everything. There were some features that were not applied.

Note: This post sucks. I’m sleepy while writing this. I have no plans of editing it either. Pasensya na po.

Microcontroller Project : Alarm Clock

Estudyante — Mon, 24 Sep 2007 15:07:18 +0000

Ok. We we’re given (again) a project for finals in our Digital Microcontrollers class. It’s a digital clock which has an alarm feature. The time of the clock could be set and it should be in the 12-hour format. Aside from that, there should be five user-programmable alarm slots that can be set. The alarm should use a buzzer. Only one PIC16F84A chip should be used in the project. The circuit should either be mounted and soldered in a universal PCB or in a custom-designed printed circuit board.

I volunteered to do the project for our group since my other groupmates are going to be busy on our other projects. Programming is one of my fortes. What makes Digital Microcontroller class more exciting is we do not program applications for software but for hardwares instead. We embed the compiled application we have created in a PIC16F84a Microchip. It’s a 16-bit microcontroller readily available in our ’suking tindahan’.

This afternoon, I started working on the circuit design. I used Eagle Software to make the circuit’s schematic diagram and circuit board layout. Here’s how it looks,

I already have the printed copy of the design. The next thing to do is transfer the design on the presynsethized printed circuit board which fortunately I still have some left. The software part is not yet done. I’ll keep you updated then.

Thesis, thesis and more thesis

Estudyante — Thu, 20 Sep 2007 17:35:36 +0000

After working on our thesis proposal for few weeks now, my sufferings finally came to an end (or rather started). We had our thesis defense a couple of days ago. We were scheduled for an hour of defense in front of our panelists. A lot of modifications were suggested by our panelists. They also criticized our capacity to implement our project given the short time that we have. And what’s worse is we need to purchase a Php 12,000.00 worth of SMS Module w/ Global Positioning System from abroad. Wow. Where would we get that kind of money?

Since our thesis proposal was already approved, all we have to do now is wait for the semester to end so we could submit the revised thesis proposal and start working on our prototypes during the semestral break. Miss B suggested that we put our thesis on hold so we could start working on the ~~many~~ projects that we have. Now I know how expensive it is to graduate. Our grades were not the only thing which suffers, our pockets too.

It’s not the thesis (project study) alone which bothers me now. I still have a research work to finish for our Environmental Engineering. We submitted the draft last week but the teacher just checked the data. He did not read what was written on it. When I checked it this evening, I laughed my a$$ out on what I have written last week. I was so sleepy when I did that paper and I did not read it either. I wrote a lot of funny stuff in it that I was not aware of. I mentioned about a ‘father’ and ‘kalasag’ on my Envi Engineering research paper. I do not know why or how I placed those words. Am I dreaming when I made that paper?

I’m partially done now. I hope I didn’t wrote anything funny in it anymore. My group mates would surely kill me.

I think i’ll go to sleep now. Good ~~night~~ morning.

By the way, the PRC already published the results of the Registered Electrical Engineer (REE) Board Exam (September 2007 Exam Results). Congratulations to my fresh Engineer friends.

Three more absences and i’m off the list of graduating students

Estudyante — Tue, 18 Sep 2007 14:15:39 +0000

I posted on my Batang Yagit blog once on how I ranked 1st on class tardiness (an exaggeration of course). I checked my attendance record last Monday after our class. Our teacher told us that anyone who had 11 absences will be marked failure debarred from the class. OMG, when I checked mine, it was 8 already. I have no plans of taking the subject (Environmental Engineering) twice. I have no plans of attending the graduation rites as one of the photographers.

Environmental Engineering was the subject that I once skipped because I simply got lazy. This is one of the most neglected subject in class since it’s only a minor subject. More than half of the class have the same dilemma as I have. I am not the only one who’s being threaten by the FD.

Anyway, the only thing that I could do now is to sleep early so I can wake up early tomorrow. I already told Mama to wake me early tomorrow morning. That if my alarm would miss, which usually happens on me. Good night guys.