Programming Forums > Application Development > C++

massive-war · Apr 10th, 2005, 10:05 PM

I don't want to have to write 50 if statements for a prog...

how do you find the largest of the numbers that have been input?

The thing is, I picked up this book, and they tell you to only use the stuff you've learned so far. But I've only learned if, if...else... and while statements (I haven't JUST learned them, but that's as far as I've gotten in the book. It's an accelerated c++ book, but it goes over the basics in the beginning, with harder problems.) Why I have to read the largest number isn't the point, but the point is I don't know the shortcut of getting the largest number.

Can anyone help? simple function call? or what?

Encryption · Apr 10th, 2005, 10:17 PM

???
I didn't understand any of that.
How many numbers will be input?
Have you went over string/char management, like arrays?

Benoit · Apr 10th, 2005, 10:25 PM

Use a bubble sort algorithm

Have all the numbers put into an array, in this case a[10]

Have a varible to temporarily hold the value, and make the switch

(Toggle Plain Text)

    for (x=0; x < 10; x++)
        for (y=0; y < 10; y++)
            if (a[y] > a[y+1])
            {
                t=a[y];
                a[y]=a[y+1];
                a[y+1]=t;
            }

massive-war · Apr 10th, 2005, 10:28 PM

thanks benoit. I was thinking of that, but for my class he won't let me use anything other than the stuff WE already learned, like as a class. We haven't covered arrays yet, but screw it, I'll use it anyway

thanks

Infinite Recursion · Apr 10th, 2005, 10:36 PM

I was bored... here is an example of getting the max number... i believe math.h has a max function you could use as an alternative... i'm sure some more complex data algorithms also have this available... but if all you had to use was the if else, etc... this will work.

(Toggle Plain Text)

#include <iostream>
#define EVER ;;
using namespace std;

int CheckMax (int x);
int GetNums (void);
int MAX = 0;

int main (void)
{
   for (EVER)
   {
      GetNums();
   }
}

int GetNums (void)
{
   int myNum = 0;
   cout << "Enter number (-1 to quit): " << endl;
   cin >> myNum;

   if (myNum != -1)
     CheckMax(myNum);
   else
   {
     cout << "The maximum value entered: " << MAX << endl;
     exit(0);
   }
   return 0;
}

int CheckMax (int x)
{
   if (x > MAX)
       MAX = x;

   return 0;
}

Enter number (-1 to quit):
4
Enter number (-1 to quit):
19
Enter number (-1 to quit):
432
Enter number (-1 to quit):
51
Enter number (-1 to quit):
5326
Enter number (-1 to quit):
13526523
Enter number (-1 to quit):
234234
Enter number (-1 to quit):
-1
The maximum value entered: 13526523

massive-war · Apr 10th, 2005, 10:47 PM

thanks infinite. That's excellent, I would have never thought of that lol...

anyways, I was supposed to use a while loop, but what I'll probably do is make a garbage call, like:

.........

int x = 0;

while (x = 0)

...... do the max number thing.....

after all the max stuff is set up....

x = -1;

so it quits the loop

get what I'm saying, just make a stupid call to get the while statement in, which is a waste of memory and time, but he said he wants a while statement and I can't think of one anyway...

Thanks though

massive-war · Apr 10th, 2005, 10:47 PM

I'll post my code in a sec...

Infinite Recursion · Apr 10th, 2005, 10:50 PM

lol... change my for"ever" loop into a while

while (;

{
GetNums():
}

Normally, I don't like doing homework assignments... because the student doesn't learn that way...
Hopefully, this thread was helpful and you have learned some new ways to do stuff...

Infinite Recursion · Apr 10th, 2005, 10:51 PM

that is while ( ; ; )

massive-war · Apr 10th, 2005, 10:54 PM

no way, I learn something new everyday... while(;

Now I've heard everything...

I still think my garbage value function thing was a good idea. lol

Thanks infinite, your awesome

Note: BTW, I'm using your while(;

Apr 10th, 2005, 10:05 PM	#1
massive-war Hobbyist Programmer Join Date: Mar 2005 Location: Illinois--> My room Posts: 117 Rep Power: 0	Simple (stupid cause I don't know it) basic question I don't want to have to write 50 if statements for a prog... how do you find the largest of the numbers that have been input? The thing is, I picked up this book, and they tell you to only use the stuff you've learned so far. But I've only learned if, if...else... and while statements (I haven't JUST learned them, but that's as far as I've gotten in the book. It's an accelerated c++ book, but it goes over the basics in the beginning, with harder problems.) Why I have to read the largest number isn't the point, but the point is I don't know the shortcut of getting the largest number. Can anyone help? simple function call? or what? __________________ Support Our Troops

Apr 10th, 2005, 10:25 PM	#3
Benoit Expert Programmer Join Date: Sep 2004 Location: Ontario, Canada Posts: 548 Rep Power: 4	Use a bubble sort algorithm Have all the numbers put into an array, in this case a[10] Have a varible to temporarily hold the value, and make the switch (Toggle Plain Text) for (x=0; x < 10; x++) for (y=0; y < 10; y++) if (a[y] > a[y+1]) { t=a[y]; a[y]=a[y+1]; a[y+1]=t; } for (x=0; x < 10; x++) for (y=0; y < 10; y++) if (a[y] > a[y+1]) { t=a[y]; a[y]=a[y+1]; a[y+1]=t; } __________________ Johnny was a chemist's son but Johnny is no more, for what Johnny thought was H2O was H2SO4

Apr 10th, 2005, 10:28 PM	#4
massive-war Hobbyist Programmer Join Date: Mar 2005 Location: Illinois--> My room Posts: 117 Rep Power: 0	thanks benoit. I was thinking of that, but for my class he won't let me use anything other than the stuff WE already learned, like as a class. We haven't covered arrays yet, but screw it, I'll use it anyway thanks __________________ Support Our Troops

Apr 10th, 2005, 10:36 PM	#5
Infinite Recursion Programming Guru Join Date: Jul 2004 Location: United States Posts: 3,453 Rep Power: 7	I was bored... here is an example of getting the max number... i believe math.h has a max function you could use as an alternative... i'm sure some more complex data algorithms also have this available... but if all you had to use was the if else, etc... this will work. (Toggle Plain Text) #include <iostream> #define EVER ;; using namespace std; int CheckMax (int x); int GetNums (void); int MAX = 0; int main (void) { for (EVER) { GetNums(); } } int GetNums (void) { int myNum = 0; cout << "Enter number (-1 to quit): " << endl; cin >> myNum; if (myNum != -1) CheckMax(myNum); else { cout << "The maximum value entered: " << MAX << endl; exit(0); } return 0; } int CheckMax (int x) { if (x > MAX) MAX = x; return 0; } #include <iostream> #define EVER ;; using namespace std; int CheckMax (int x); int GetNums (void); int MAX = 0; int main (void) { for (EVER) { GetNums(); } } int GetNums (void) { int myNum = 0; cout << "Enter number (-1 to quit): " << endl; cin >> myNum; if (myNum != -1) CheckMax(myNum); else { cout << "The maximum value entered: " << MAX << endl; exit(0); } return 0; } int CheckMax (int x) { if (x > MAX) MAX = x; return 0; } Enter number (-1 to quit): 4 Enter number (-1 to quit): 19 Enter number (-1 to quit): 432 Enter number (-1 to quit): 51 Enter number (-1 to quit): 5326 Enter number (-1 to quit): 13526523 Enter number (-1 to quit): 234234 Enter number (-1 to quit): -1 The maximum value entered: 13526523 __________________ http://jasonpowers.net "There are a thousand hacking at the branches of evil to one who is striking at the root."

Apr 10th, 2005, 10:47 PM	#6
massive-war Hobbyist Programmer Join Date: Mar 2005 Location: Illinois--> My room Posts: 117 Rep Power: 0	thanks infinite. That's excellent, I would have never thought of that lol... anyways, I was supposed to use a while loop, but what I'll probably do is make a garbage call, like: ......... int x = 0; while (x = 0) ...... do the max number thing..... after all the max stuff is set up.... x = -1; so it quits the loop get what I'm saying, just make a stupid call to get the while statement in, which is a waste of memory and time, but he said he wants a while statement and I can't think of one anyway... Thanks though __________________ Support Our Troops

Apr 10th, 2005, 10:47 PM	#7
massive-war Hobbyist Programmer Join Date: Mar 2005 Location: Illinois--> My room Posts: 117 Rep Power: 0	I'll post my code in a sec... __________________ Support Our Troops

Apr 10th, 2005, 10:50 PM	#8
Infinite Recursion Programming Guru Join Date: Jul 2004 Location: United States Posts: 3,453 Rep Power: 7	lol... change my for"ever" loop into a while while (; { GetNums(): } Normally, I don't like doing homework assignments... because the student doesn't learn that way... Hopefully, this thread was helpful and you have learned some new ways to do stuff... __________________ http://jasonpowers.net "There are a thousand hacking at the branches of evil to one who is striking at the root."

Apr 10th, 2005, 10:51 PM	#9
Infinite Recursion Programming Guru Join Date: Jul 2004 Location: United States Posts: 3,453 Rep Power: 7	that is while ( ; ; ) __________________ http://jasonpowers.net "There are a thousand hacking at the branches of evil to one who is striking at the root."

Apr 10th, 2005, 10:54 PM	#10
massive-war Hobbyist Programmer Join Date: Mar 2005 Location: Illinois--> My room Posts: 117 Rep Power: 0	no way, I learn something new everyday... while(; Now I've heard everything... I still think my garbage value function thing was a good idea. lol Thanks infinite, your awesome Note: BTW, I'm using your while(; __________________ Support Our Troops

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Programming Forums > Application Development > C++

Simple (stupid cause I don't know it) basic question