Solved

Calculate a firsts numbers

Posted on 2003-10-27
1
174 Views
Last Modified: 2010-04-01
I have a program but this don't work, this programe had to calculate a firsts numbers of a serie, thanks.

#include <stdio.h>
#include <string.h>
#include <math.h>
void main()
{
        char c[255];
      long int m=1,cont1,cont2,b=2;
        printf("\n Tria si vols imprimir una llista de nombre parells,\n o una llista de nombres primers: ");
      scanf("%s",&c);
      printf("\nIntrodueix el primer numero de la serie: ");
      scanf("%ld",&cont1);
      printf("\nIntrodueix el segon numero de la serie: ");
      scanf("%ld",&cont2);
      if (!strcmp (c,"primers")){
            while (cont1<cont2){
                  while ((b>(cont1/2)) && (m!=0)){
                  if((cont1%b)!=0) b=b+1;
                  if((cont1%b)==0) m=0;
                  }
                  if (m==0){
                         printf("\nEl nombre %ld és primer",cont1);
                         m=1;
                         }
                  ++cont1;
                  }
      }
      if (!strcmp (c,"parells")){
            if((cont1%2)!=0) ++cont1;
            while (cont1<cont2){
                  printf("%ld\n", cont1);
                  ++cont1;
                  ++cont1;
                  }
              if((cont2/2)==0) printf("%ld",cont2);
      }        
}
0
Comment
Question by:FxSedge
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 13

Accepted Solution

by:
SteH earned 50 total points
ID: 9632232
Is this homework? I guess yes, so I give just hints:
put the line
printf ("%d %d %d\n", cont1, b, m);
after while (cont1<cont2) and look whether the values are as you expect.

Another thing:

 if (test != 0) do1;
 if (test == 0) do2;

can be rewritten as

if (test != 0)
     do1;
else
     do2;
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Article by: SunnyDark
This article's goal is to present you with an easy to use XML wrapper for C++ and also present some interesting techniques that you might use with MS C++. The reason I built this class is to ease the pain of using XML files with C++, since there is…
Templates For Beginners Or How To Encourage The Compiler To Work For You Introduction This tutorial is targeted at the reader who is, perhaps, familiar with the basics of C++ but would prefer a little slower introduction to the more ad…
The viewer will learn how to pass data into a function in C++. This is one step further in using functions. Instead of only printing text onto the console, the function will be able to perform calculations with argumentents given by the user.
The viewer will learn additional member functions of the vector class. Specifically, the capacity and swap member functions will be introduced.

636 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question