Saturday, September 22, 2012

C++ PROGRAM TO CHECK WHETHER A NUMBER IS CIRCULAR PRIME OR NOT

The number, 197, is called a circular prime because all rotations of the digits: 197, 971, and 719, are themselves prime.

7 comments:

  1. Prime number program in C++

    prime number is only divisible by 1 and itself,
    we can easily write prime number program in c++, just check number is not divisible by any other numbers except 1 and number itself.

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  2. Prime number program in C++

    A prime number is a natural number which is greater than 1 and these numbers are only divisible by 1 and itself number. In programming point of view, we check condition number is divisible by other number or not except 1 and number itself. If number is not divisible by other number than that number is prime number.

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  3. can you write the program with using only while loop?

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    Replies
    1. You mean avoid the usage of do-while ??

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  4. This code is correct ?Prime Number Program in C

    #include
    #include
    void main()
    {
    int num,res=0;
    clrscr();
    printf("\nENTER A NUMBER: ");
    scanf("%d",&num);
    res=prime(num);
    if(res==0)
    printf("\n%d is a prime number",num);
    else
    printf("\n%d is not a prime number",num);
    getch();
    }
    int prime(int n)
    {
    int i;
    for(i=2;i<=n/2;i++)
    {
    if(n%i!=0)
    continue;
    else
    return 1;
    }
    return 0;
    }

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  5. This code is frequently ask in any examination Prime number program in C++ is very simple and easy to write. Using for loop and if else we can write this code.

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