if we ask the user to enter the second string having the 
same characters as in the first string, the program 
essentailly reduces to finding whether there is a 
repetition in the second string. A program for this is 
given below.

#include<iostream>
using namespace std;

int main()
{
	char string1[10];
	char string2[10];
	int flag = 0;

	cout<<"\n Enter the first string";
	cin>>string1;
	cout<<"\n Enter the second string with the same 
characters as entered in string1";
	cin>>string2;
	for(int i = 0; i < strlen(string2); i++)
	{
		for(int j = i+1; j < strlen(string2) ; j++)
		{
			if(string2[i] == string2[j])
			{
				flag = 1;
				break;
			}
		}
	}

	if(flag ==1)
		cout<<"\n wrong";
	else
		cout<<"\n correct";

	return 0;
}