I need help writing this program in C++....if anyone has some time to write it donw...would really appreciate it.

QUESTION:

Write a c++ program that will ask you for a number.Expect the user to enter only positive integers from 0 to 32,767.Then tell if it is "prime", "not prime" or an "emirp".The program should continue until a zero is entered.Emirps are special cases in prime numbers that are reversed.For example 37 is an emirp because not only it is prime, but so too is 73 (reverse of 37)

The output should consist of a number being investigated followed by the pgrase prime, not prime or emirp.There should be only one result per line.

SAMPLE RUN

Enter a number 37
37 is an emirp.

Enter a number 39
39 is not prime.

Enter a number359
359 is an emirp.

Enter a number 32713
32713 is an emirp.

Enter a number 773
773 is a prime

Enter a number 0.

system("pause") is to be used.

Thanks whoever is interested....

waaiyaaat!!!
k ho programming assignment ko solution (code) nai online magne? baru ghanta kam garera padhai ma time diyeko bhaye huncha ni..... ki kaso saathi haru? I hope no one will give any help in this matter....

nicely said Mr.nobody......it is an assignment ....i tried doing it...but got stuck with the emirp thingie..."i hope noone will give any help in this matter re"...haha...alright....

ok to check if the number is "emrip" or not do the following task-
1. check if the number is prime or not.
2. if the number is prime then reverse it.. like if 37 is the input its reverse will be 73.
3. check if the reverse number is prime too. if it is, then the number is "emrip" otherwise its prime only.

things look pretty easy.... so try iy

Don't remember much of a syntax in C++..I can think only in VBA.
But the logic I can think of for the "emirp" part is:

First:
Convert the Number to String. Probably like this: string B = (string) A.

Second:
Reverse the String using some code (probably the one here:
Third:
Convert target=_blank>http://uw714doc.sco.com/en/SDK_c++/_Reverse.html)

Third:
Convert the reverse string back to number. (how?)

and then test for prime or no prime.

Other guruz might know better. Good luck.

how do i reverse a prime number...i.e. how do i get a emrip...---code pls if possible...thanks for the feedback mate..take it easy...peace

( Found on http site uw714doc.sco.com/en/SDK_c++/_Reverse.html )

String
reverse(String s)
{
String rslt;
for(int i=length(s)-1;i>=0;i--)
rslt += s.char_at(i);
return rslt;
}

See if it reverses a string. But first you have to convert your Number to string.

or just here...
bluefintuna.wordpress.com/2006/08/18/q10235-simply-emirp/

(googled "emirp algorithm")

Do something like this,
Say you have a prime number,
int i=37
Divide i by 10(integer division)
so
int firstnumber=i/10(=3)
int secondnumner=i-firstnumber*10(remember 10 used is the value of
decimal place of each number. for larger number it will change)
int reversed number=secontNumber*10+firstNumber

#included

using namespace std;

int main(int argc, char* argv[])
{

int input;
cout << "Enter the number to be checked";
cin >> input;
cout >> process(input);

}

String process (int input)
{
cout >> " This seems to be simple program...Try to do yourself..";
cout >> "Feeding with spoon is bad for health";
cout >> " Abnormal Program Termination"+ int(1/0);
exit(0);

}

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actually i finally fixed the problem...and the program ran well...thanks for your guy's help...peace.....now finally i can smoke dem wicked joints of time...later....peace.............

could u please show me how u did it....im havin lots of trouble and i cant get it right...