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C-sharp How to Find the biggest integer?

Posted on 2009-04-07
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Last Modified: 2012-05-06
I just started coding and iam doing c-sharp first. So far all i know is If and else statements. I am trying to figure out a way to find the biggest integer out of 5 integers the user inputs. My problem is that i cant get it to work here is my code:

Whenever the first integer is bigger then the second integer that i have inputted the code messes up. It assigns biggest to the first integer and it does not check the rest.

How do i fix that?

i tried adding more if statements that checked 1 vs 3 and 1 vs 4 1vs5 but i either did not do it correctly or it did not work that way...
using System;
using System.Collections.Generic;
using System.Text;
 
namespace Ch3
{
    class ch3practice
    {
        static void Main(string[] args)
        {
            int number1, number2, number3, number4, number5;
            int biggest = 0;
           
            // initialize the integers
 
            Console.Write("Integer please:  ");
            //promt for integer
            number1 = Convert.ToInt32(Console.ReadLine());
            //take integer 
            Console.Write("Integer please:  ");
            //promt for integer
            number2 = Convert.ToInt32(Console.ReadLine());
            //take integer Console.Write("Integer please");
            Console.Write("Integer please:  ");
            //promt for integer
            number3 = Convert.ToInt32(Console.ReadLine());
            //take integer 
            Console.Write("Integer please:  ");
            //promt for integer
            number4 = Convert.ToInt32(Console.ReadLine());
            //take integer Console.Write("Integer please");
            Console.Write("Integer please:  ");
            //promt for integer
            number5 = Convert.ToInt32(Console.ReadLine());
            //take integer Console.Write("Integer please");           
          
            //check 1v2
            if (number1 >= number2)
              
                biggest = number1;
            else 
 
            if (number2 >= number3)
                                    biggest = number2;
                                else
                                    if (number3 >= number4)
                                        biggest = number3;
                                    else
                                        if (number4 >= number5)
                                            biggest = number4;
                                        else
                                            if (number5 >= number1)
                                                biggest = number5;
                           
            
                
   
 
         Console.WriteLine("{0}  Is the bigest #", biggest );                
            Console.ReadLine();
 
        }
    }
}

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Question by:Bulg
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13 Comments
 
LVL 6

Expert Comment

by:Cebik
ID: 24091592
try this :)

using System;
using System.Collections.Generic;
using System.Text;
 
namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            List<int> values = new List<int>();
 
            while (true)
            {
                Console.Write("\nEnter value " + (values.Count + 1).ToString() + " :");
                string inputValue = Console.ReadLine();
 
                if (inputValue == "")
                    break;
 
                int value;
                if (int.TryParse(inputValue, out value) == false)
                    continue;
 
                values.Add(value);
            }
 
            int bigest = int.MinValue;
            foreach (int i in values)
                if (i > bigest)
                    bigest = i;
 
            Console.WriteLine("\n\nThe bigest number is: " + bigest.ToString());
            Console.ReadLine();
        }
    }
}

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0
 
LVL 6

Expert Comment

by:Cebik
ID: 24091606
in yout example will be

if (number1 > bigest) bigest = number1;
if (number2 > bigest) bigest = number2;
if (number3 > bigest) bigest = number3;
(...)
if (numberN> bigest) bigest = numberN;

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0
 
LVL 6

Expert Comment

by:Cebik
ID: 24091618
but... at the begining add

bigest = int.MinValue;

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Author Comment

by:Bulg
ID: 24091814
show me an example please i can only use if and else statements so far ;/ thats why the first code is of no use to me.

added a few more lines but it doesn't work ;/
using System;
using System.Collections.Generic;
using System.Text;
 
namespace Ch3
{
    class ch3practice
    {
        static void Main(string[] args)
        {
            int number1, number2, number3, number4, number5;
            int biggest = 0;
 
 
           
 
            // initialize the integers
 
            Console.Write("Integer please:  ");
            //promt for integer
            number1 = Convert.ToInt32(Console.ReadLine());
            //take integer 
            Console.Write("Integer please:  ");
            //promt for integer
            number2 = Convert.ToInt32(Console.ReadLine());
            //take integer Console.Write("Integer please");
            Console.Write("Integer please:  ");
            //promt for integer
            number3 = Convert.ToInt32(Console.ReadLine());
            //take integer 
            Console.Write("Integer please:  ");
            //promt for integer
            number4 = Convert.ToInt32(Console.ReadLine());
            //take integer Console.Write("Integer please");
            Console.Write("Integer please:  ");
            //promt for integer
            number5 = Convert.ToInt32(Console.ReadLine());
            //take integer Console.Write("Integer please");           
          
            //check 1v2
            if (number1 >= number2)
              
                biggest = number1;
            
            else 
 
            if (number2 >= number3)
                                    biggest = number2;
                                else
                                    if (number3 >= number4)
                                        biggest = number3;
                                    else
                                        if (number4 >= number5)
                                            biggest = number4;
                                        else
                                            if (number5 >= number1)
                                                biggest = number5;
                            if (biggest <=number3 )
                                biggest = number3;
                            if (number4 >= biggest)
                                biggest = number4;
                            if (number4 >= biggest)
                                biggest = number5;
            
                
   
 
         Console.WriteLine("{0}  Is the bigest #", biggest );                
            Console.ReadLine();
 
        }
    }
}

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0
 
LVL 1

Expert Comment

by:DaRakNa
ID: 24092007
Try to use this:
using System;
using System.Collections.Generic;
using System.Text;
 
namespace Ch3
{
    class ch3practice
    {
        static void Main(string[] args)
        {
            int number[6];
            int biggest = 0;
           
            // initialize the integers
 
            Console.Write("Integer please:  ");
            //promt for integer
            number[1] = Convert.ToInt32(Console.ReadLine());
            //take integer 
            Console.Write("Integer please:  ");
            //promt for integer
            number[2] = Convert.ToInt32(Console.ReadLine());
            //take integer Console.Write("Integer please");
            Console.Write("Integer please:  ");
            //promt for integer
            number[3] = Convert.ToInt32(Console.ReadLine());
            //take integer 
            Console.Write("Integer please:  ");
            //promt for integer
            number[4] = Convert.ToInt32(Console.ReadLine());
            //take integer Console.Write("Integer please");
            Console.Write("Integer please:  ");
            //promt for integer
            number[5] = Convert.ToInt32(Console.ReadLine());
            //take integer Console.Write("Integer please");           
          
            //check 
            for(int i=1;i<=5;i++)
               {
                  if(number[i]>biggest)
                     {
                         biggest=number[i];i=1;
                     }
               }
         Console.WriteLine("{0}  Is the bigest #", biggest );                
            Console.ReadLine();
 
        }
    }
}

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0
 
LVL 6

Expert Comment

by:Cebik
ID: 24092076
fixed your mistakes

static void Main(string[] args)
        {
            int[] number = new int[6];
            int biggest = 0;
           
            // initialize the integers
 
            Console.Write("Integer please:  ");
            //promt for integer
            number[0] = Convert.ToInt32(Console.ReadLine());
            //take integer 
            Console.Write("Integer please:  ");
            //promt for integer
            number[1] = Convert.ToInt32(Console.ReadLine());
            //take integer Console.Write("Integer please");
            Console.Write("Integer please:  ");
            //promt for integer
            number[2] = Convert.ToInt32(Console.ReadLine());
            //take integer 
            Console.Write("Integer please:  ");
            //promt for integer
            number[3] = Convert.ToInt32(Console.ReadLine());
            //take integer Console.Write("Integer please");
            Console.Write("Integer please:  ");
            //promt for integer
            number[4] = Convert.ToInt32(Console.ReadLine());
            //take integer Console.Write("Integer please");           
          
            //check 
            for(int i=0;i<number.Length;i++)
            {
              if(number[i]>biggest)
                     biggest=number[i];i=1;
            }
 
           Console.WriteLine("{0}  Is the bigest #", biggest );                
           Console.ReadLine();
 
        }

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0
 
LVL 6

Expert Comment

by:Cebik
ID: 24092097
Bulg:


static void Main(string[] args)
{
    int number1, number2, number3, number4, number5;
   
    // initialize the integers
 
    Console.Write("Integer please:  ");
    //promt for integer
    number1 = Convert.ToInt32(Console.ReadLine());
    //take integer 
    Console.Write("Integer please:  ");
    //promt for integer
    number2 = Convert.ToInt32(Console.ReadLine());
    //take integer Console.Write("Integer please");
    Console.Write("Integer please:  ");
    //promt for integer
    number3 = Convert.ToInt32(Console.ReadLine());
    //take integer 
    Console.Write("Integer please:  ");
    //promt for integer
    number4 = Convert.ToInt32(Console.ReadLine());
    //take integer Console.Write("Integer please");
    Console.Write("Integer please:  ");
    //promt for integer
    number5 = Convert.ToInt32(Console.ReadLine());
    //take integer Console.Write("Integer please");           
  
    int biggest = int.MinValue;
    if (number1 > biggest)
        biggest = number1;
    if (number2 > biggest)
        biggest = number2;
    if (number3 > biggest)
        biggest = number3;
    if (number4 > biggest)
        biggest = number4;
    if (number5 > biggest)
        biggest = number5;
       
 Console.WriteLine("{0}  Is the bigest #", biggest );                
    Console.ReadLine();
 
}

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LVL 6

Expert Comment

by:Cebik
ID: 24092119
but in my post id: 24091592 is if statement in line 30...
this is much more better solution..
0
 
LVL 2

Expert Comment

by:zulti
ID: 24092157
I would change line 28 in Cebik's answer to be
28:     int biggest = number1 ;

and you can remove lines 29 and 30
other than that this is the answer you asked for.....
0
 
LVL 6

Expert Comment

by:Cebik
ID: 24092178
shure... can be in this way also..
0
 
LVL 6

Accepted Solution

by:
Cebik earned 500 total points
ID: 24092198

static void Main(string[] args)
{
    int number1, number2, number3, number4, number5;
   
    // initialize the integers
 
    Console.Write("Integer please:  ");
    //promt for integer
    number1 = Convert.ToInt32(Console.ReadLine());
    //take integer 
    Console.Write("Integer please:  ");
    //promt for integer
    number2 = Convert.ToInt32(Console.ReadLine());
    //take integer Console.Write("Integer please");
    Console.Write("Integer please:  ");
    //promt for integer
    number3 = Convert.ToInt32(Console.ReadLine());
    //take integer 
    Console.Write("Integer please:  ");
    //promt for integer
    number4 = Convert.ToInt32(Console.ReadLine());
    //take integer Console.Write("Integer please");
    Console.Write("Integer please:  ");
    //promt for integer
    number5 = Convert.ToInt32(Console.ReadLine());
    //take integer Console.Write("Integer please");           
  
    biggest = number1;
    if (number2 > biggest)
        biggest = number2;
    if (number3 > biggest)
        biggest = number3;
    if (number4 > biggest)
        biggest = number4;
    if (number5 > biggest)
        biggest = number5;
       
    Console.WriteLine("{0}  Is the bigest #", biggest);                
    Console.ReadLine();
}

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0
 
LVL 6

Expert Comment

by:Cebik
ID: 24092277
sorry...
line 28

int biggest = number1;

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Author Closing Comment

by:Bulg
ID: 31567733
Thank you. It makes perfect seance. Sometimes the simplest things get me.
0

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