Please Help Me Defend My Program...

TheGW · 10-06-2007, 05:05 PM

We Got A Coming Defence In Our CSCI01 Subject, And I'm A Bit Scared, I Don't Even Know How To Explain, Can Anyone Please Help Me Explain, Even Just The Basics...

I've Been Working These For More Than 3 Days, Staying Up Late, And Burning Oil...

Quote:

#include<string.h>
#include<ctype.h>

main()
{int count1,count2,y,count3,a,b;
char name[100][80]={0},temp;
char pass[20]="TOBLERONE",password[20];
float grade[100],qui1,quiz2,quiz3;

clrscr();

count3=0;
a=15;
b=10;

do
{gotoxy(a,b);
printf("DE CODE VAN DE VEILIGHEID: ");
gets(password);

count3++;
a++;
b++;

if(strcmp(pass,password)==0)
{gotoxy(a,b);
printf("\n\t\tTOEGELATEN HET WOORD VAN DE PAS: VERLEENDE TOEGANG!");
BREAK;
}

else
{if(count==3)
{gotoxy(a,b);
printf("\n\t\WAARSCHUWING!: AANDACHT! , WORDT UW TOEGANG ONTKEND!");
}
}
}while(count3<3);

getch();

clrscr();

gotoxy(5,1);
printf("STUDENTS NAME");

gotoxy(25,1)
printf("QUIZ 1")

gotoxy(35,1)
printf("QUIZ 2")

gotoxy(45,1)
printf("QUIZ 3")

gotoxy(60,1)
printf("STUDENTS AVERAGE");

for(count1=0,count2=0,y=2,count1=5;count1<=100;cou nt++,y++)
{gotoxy(8,y);
scanf("%s",&name[count2]);

do
{temp=getch();

if(isalpha(temp))
{printf("%s",temp);
name[count1][count2]=temp;
count2++;
}
}while(temp!='\r' && count2<=100 && temp!='0');
}
if(temp == '0')
break;

gotoxy(27,y);
scanf("%f",&quiz1);

gotoxy(37,y);
scanf("%f",&quiz2);

gotoxy(47,y);
scanf("%f",&quiz3);

grade[count2]=(quiz1+quiz2+quiz3)/3;

gotoxy(65,y);
scanf("%0.2f",grade[count2]);
}
getch();
}

This Program Is Used Like A Instructor's Class Record, Inputting The Student's Name, 3 Quiz Scores, And Outputing The Average...
Whenever Our Instructor Press "0", The Program Will Stop And Output Everything... But Were UnAble To Do It...

Please Help Me...

Eriond · 10-06-2007, 11:29 PM

I believe it has something to do with gets. I remember back in my C++ class, if you used gets with cin, bad things happened, and I think cin is an extension of scanf. Try only using scanf or gets, but not both, and see what happens.

TheGW · 10-07-2007, 04:00 AM

I Also Forogt To Tell, That The Panelists Wants Us To Explain Every Detail (Not Just As A Whole), And Explain What Happens...

Please I Just Need Some Help...

Eriond · 10-07-2007, 04:30 AM

Quote:

Originally Posted by TheGW

I Also Forogt To Tell, That The Panelists Wants Us To Explain Every Detail (Not Just As A Whole), And Explain What Happens...

Please I Just Need Some Help...

Oh, ok no problem. I'll go through it.

Code:

#include<string.h>
#include<ctype.h>

These take files (header files) that are stored with the program you're writing the code with, and put them at the top of your program. (It allows you to use all the functions like gotoxy and printf, because those functions are actuallly stored in other files, which the includes can locate)

Code:

int main()
{
....
}

This is your main function. It's called the entrypoint to your program. It's where the program starts.

Code:

int count1,count2,y,count3,a,b;
char name[100][80]={0},temp;
char pass[20]="TOBLERONE",password[20];
float grade[100],qui1,quiz2,quiz3;

These are your variables declarations. They take small segments of memory and allow you to use them as either integers, characters or floating point numbers.

Code:

clrscr();

This just clears the console window.

Code:

count3=0;
a=15;
b=10;

These put numbers to your variables. They set the small segments of memory to a specific value.

Code:

do
{
....
} while(count3<3);

This just means that the stuff inside this will be executed, then, at the end, if Count3 is less than 3, it'll loop back to the beginning and start again, and keep doing this until count is greater than or equal to 3.

Code:

gotoxy(a,b);

This is the gotoxy function. It makes it so that whenever you try to put something in the console window, it goes to the x and y position that you set it to.

Code:

printf("DE CODE VAN DE VEILIGHEID: ");

This just puts into the console window whatever you typed into it, at the position specified by gotoxy, or just, by default, at 0,0, in the top left hand corner of the window.

Code:

gets(password);

This one's slightly more complicated. Gets takes the user's input, and puts it into the character array variable specified (also called a string variable). So in this case, if the user types in "TOBLERONE", it'll get stored in the variable password. password[0] is equal to 'T', etc..

Code:

count3++;
a++;
b++;

This just means take the variable and add one to it.

Code:

if(strcmp(pass,password)==0)
{
....
}

This means, compare the variables pass and password. If the function returns 0 (which means, if the two strings are equal), then proceed with the code inside the square brackets.

Code:

BREAK;

This means stop the loop that it's currently in, and skip to the end. (in this case the while(count3<3) loop.

Code:

else
{
...
}

Just means that if the if statement above is NOT 0, then do the stuff in square brackets.

Code:

printf("\n\t\tTOEGELATEN HET WOORD VAN DE PAS: VERLEENDE TOEGANG!");

The \n is a new line character, it means skip one line down on the console window. The \t is a tab character, it means move over a certain amount of spaces.

Code:

getch();

Kind of a way of pausing the program, it means let the user make a single keystroke before continuing.

Code:

for(count1=0,count2=0,y=2,count1=5;count1<=100;cou nt++,y++)

Like a while loop, except when the loop starts, this makes count1 = 0, etc.. and will loop until count1 is less than or equal to 100, and every time the loop finishes it'll add one to count and one to y.

Code:

scanf("%s",&name[count2]);

This means take input from the user and put it into the string specified. the "%s" means string, the & sign before the variable means the address of the variable (where it is in memory, so basically scanf puts the value INTO the address in memory, instead of into the value of the data in memory (so like into some random obscure location instead of "into" the number 5). the [] after name mean that you're putting it into count2 element of the variable array. An array is a big bunch of variables all put together. char name[100][80] that's an array of 8000 characters, each character string is 80 in length, and there are 100 of them.

Code:

temp=getch();

if(isalpha(temp))

This puts the value that user types in into the variable temp. Then the if statement checks to see if the character that was put in is with in a certain range (I.E., if it's a letter, like 'A'). If the user types in A, it'd return true, if the user typed in the number 2, it would return false.

Code:

printf("%s",temp);

This just prints the string that's located in the temp variable... uh... yeah. That's actually wrong. That should be %c, for a single character, because temp is only one variable, and not a bunch of them. You should change that.

Code:

scanf("%f",&quiz1);

This takes the user's input in the form of a floating point number (I.E. 2.5453), and puts it into the address of quiz1.

Okay! I think that's everything. Hope it answers your questions!

TheGW · 10-07-2007, 07:38 AM

Sure Is It's Everything...

I Wanna Cry, Thanks For Really Helping Me.
It Sure Is A Lot Of Things To Remember.

Thanks...
Thanks...
Thanks...
Thanks...
Thanks...

Many Thanks...

Eriond · 10-07-2007, 10:41 PM

Lol, don't worry about it. It took me like 10 mins to type up, it's not that big a deal

Thanks for the thanks

If you ever have any questions, just ask!

TheGW · 10-08-2007, 12:17 AM

Quote:

Originally Posted by Eriond

Lol, don't worry about it. It took me like 10 mins to type up, it's not that big a deal

Thanks for the thanks

If you ever have any questions, just ask!

Sure I'll Ask Soon...
Thanks Again!

10-06-2007, 11:29 PM	#2 (permalink)
Eriond McFox Sandwich Join Date: May 2006 Location: Canada Posts: 455 Reputation: 17 MMOFaces Profile: None Yet	I believe it has something to do with gets. I remember back in my C++ class, if you used gets with cin, bad things happened, and I think cin is an extension of scanf. Try only using scanf or gets, but not both, and see what happens. __________________ This was a triumph. I'm making a note here, HUGE SUCCESS. Outsider 3D Space Shooter/RPG in Development http://advena.awardspace.com/

10-07-2007, 04:00 AM	#3 (permalink)
TheGW Sun? What Sun? Join Date: Apr 2007 Location: Tacloban City, Leyte, Republic Of The Philippines Posts: 950 Reputation: 17 MMOFaces Profile: None Yet	Hmm... I Also Forogt To Tell, That The Panelists Wants Us To Explain Every Detail (Not Just As A Whole), And Explain What Happens... Please I Just Need Some Help... __________________ Some said, "Don't play childish games like Pokémon". I was frustrated, and I shouted, "Dialga!; Roar Of Time!". - - - - - R.O.S.E. OnLine Evolution: http://www.onrpg.com/boards/95254.html UpDated! RAGNARÖK OnLine RPG™: http://www.onrpg.com/boards/82072.html UpDated!

10-07-2007, 07:38 AM	#5 (permalink)
TheGW Sun? What Sun? Join Date: Apr 2007 Location: Tacloban City, Leyte, Republic Of The Philippines Posts: 950 Reputation: 17 MMOFaces Profile: None Yet	O.m.g. Sure Is It's Everything... I Wanna Cry, Thanks For Really Helping Me. It Sure Is A Lot Of Things To Remember. Thanks... Thanks... Thanks... Thanks... Thanks... Many Thanks... __________________ Some said, "Don't play childish games like Pokémon". I was frustrated, and I shouted, "Dialga!; Roar Of Time!". - - - - - R.O.S.E. OnLine Evolution: http://www.onrpg.com/boards/95254.html UpDated! RAGNARÖK OnLine RPG™: http://www.onrpg.com/boards/82072.html UpDated!

10-07-2007, 10:41 PM	#6 (permalink)
Eriond McFox Sandwich Join Date: May 2006 Location: Canada Posts: 455 Reputation: 17 MMOFaces Profile: None Yet	Lol, don't worry about it. It took me like 10 mins to type up, it's not that big a deal Thanks for the thanks If you ever have any questions, just ask! __________________ This was a triumph. I'm making a note here, HUGE SUCCESS. Outsider 3D Space Shooter/RPG in Development http://advena.awardspace.com/

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