please help me know what the error in my programme is!

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C#

#include<stdio.h>
#include<conio.h>
int main()
    {
    clrscr();
    int i=3,j=2,num,rem;
    printf("enter the number less than which you need all the prime numbers:");
    scanf("d",&num);
    while(i<=num)
        {
        j=2;
        while(j<=i-1)
            {
            rem=(i%j);
            if(rem==0)
                {
                break;
                }
            j++;
            }
        if(j==i)
            printf("%d\n",i);
        i++;
        }
    getch();
    return 0;
    }

[edit]Indentation added - OriginalGriff[/edit]

Posted 19-Dec-14 23:45pm

Member 11324568

Updated 20-Dec-14 0:05am

OriginalGriff

v2

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Member 11324568 20-Dec-14 5:47am

there is no error...but when i run my programme...instead of listing out the prime numbers i get a blank..i didnt find any mistake..please help me out..thanks

Afzaal Ahmad Zeeshan 20-Dec-14 6:00am

Add this piece of information to the question body and not in the comments.

Member 11324568 20-Dec-14 6:09am

ok,sorry but please tell me what the error is,i compiled this programme in an online compiler and it was displaying prime numbers never ending ,it has crossed 9 digit figure already and its still running..i want to run it in turboc and its failing..plase afzaal try to point out the mistake.

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OriginalGriff · Accepted Answer · 2014-12-20T00:13:00

You need to start with looking at the basics.

C#

int i=3,j=2,num,rem;
printf("enter the number less than which you need all the prime numbers:");
scanf("d",&num);

If you look at the definition of scanf: http://www.cplusplus.com/reference/cstdio/scanf/[^] you will see that "d" is not a vlaid format specifier: it should be "%d":

C#

int i=3,j=2,num,rem;
printf("enter the number less than which you need all the prime numbers:");
scanf("%d",&num);

Now you will get into the loop.