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Need Help Immediatedly Please

 
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  #1
May 13th, 2008
Please help me in doing this problem in C++ without filing

______________________________________________________________________
C++ Syntax (Toggle Plain Text) 
  1. #include<iostream.h>
  2. #include<conio.h>
  3. #include<stdio.h>
  4. #define min(a,b)((a)<(b)?(a):(b))
  5. int a[6000];
  6. main()
  7.       {
  8.         file*input=fopen("number.in","r");
  9.         int n,p2,p3,p5,p7;
  10.         a[1]=n=p2=p3=p5=p7=1;
  11.         while (a[n]<2000000000)
  12.          {
  13.          a[1+n]=min4(2*a[p2],3*a[p3],5*a[p5],7*a[p7]);
  14.          if (a[n]==2*a[p2]) p++;
  15.          if (a[n]==3*a[p3]) p++;
  16.          if (a[n]==5*a[p5]) p++;
  17.          if (a[n]==7*a[p7]) p++;
  18.          }
  19.            {
  20.             fscanf(input,"%d",&n);
  21.             if (n==0) break;
  22.             printf("the%d",n);
  23.             if (n%10==1&& n/10% 10!=1)
  24.             printf("st");
  25.             else if(n%10==2&& n/10% 10!=1)
  26.             printf("nd");
  27.             else
  28.             if(n%10==3&& n/10% 10!==1)
  29.             printf("rd");
  30.             else
  31.             printf("th")
  32.             printf("humble number is %d\n",a[n]);
  33.             }
  34.             fclose(input);
  35.             return 0;
  36. 	}
Last edited by Ancient Dragon; May 13th, 2008 at 9:39 am. Reason: add code tags
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Re: Need Help Immediatedly Please

 
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  #2
May 13th, 2008
What is it that u need help with, what the project is doing, where are u stucked with the project.....sure everybody would like to know that hey
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Re: Need Help Immediatedly Please

 
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  #3
May 13th, 2008
sorry i forgot to mention that the project is that user enters a number and the programme return a humble number
e.g
user enters 3;
the program should return the 3rd humble number
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Re: Need Help Immediatedly Please

 
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  #4
May 13th, 2008
A few things come to my attention:

C++ Syntax (Toggle Plain Text) 
  1. int n,p2,p3,p5,p7;
  2. a[1]=n=p2=p3=p5=p7=1;
That's awful, what are you doing here?
C++ Syntax (Toggle Plain Text) 
  1. while (a[n]<2000000000)
  2. {
You never increase n, so it will always write in the same element,
Besides: You declared 'a' as an array of 6000 ints, so there's no room for 2000000000 numbers.
C++ Syntax (Toggle Plain Text) 
  1. {
  2. fscanf(input,"%d",&n);
What's the bracket for?

And that's just the tip of the iceberg, but before I continue:

Use code tags and indent your code. Then as a clear question about it.

[edit] And about main()
Last edited by niek_e; May 13th, 2008 at 8:38 am.
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Re: Need Help Immediatedly Please

 
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  #5
May 13th, 2008
please forget the code what i want to do is that user enters a number from keyboard the program in ouput displays the humble number
Example:
input = 5842
output = the 5842nd humble number is 2000000000
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Re: Need Help Immediatedly Please

 
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  #6
May 13th, 2008
The first thing that you have to do is find all the prime numbers except 2, 3, 5 and 7 till the number which is input. Then check if the prime numbers is a factor of the number. If it is not its humble.
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