#include<iostream>
#include<string.h>
using namespace std;
int i=0,j=0,k=0,l=0;
void del(char ab[],int n)
{
cout<<"\nA="<<ab;
for(i=n;i<strlen(ab);i++)
ab[i]=ab[i+1];
ab[i]='\0';
}
char* find_common_char(char a[], char b[])
{
k=0;
static char r[50];
int countA=strlen(a);
int countB=strlen(b);
for(i=0;i<countA;i++)
{
for(int j=0;j<countB;j++)
{
if (a[i]==b[j]){
r[k]=a[i];
k++;
}
}
}
r[k]='\0';
for(i=0;i<strlen(r);i++)
{
for(int j=0;j<strlen(r);j++)
{
if(j!=i&&r[i]==r[j]){
del(r,i);
i=0;j=0;
}
}
}
r[i]='\0';
return r;
}
char* find_common_char2(char a[], char b[])
{
k=0;
static char ra[50];
int countA=strlen(a);
int countB=strlen(b);
for(i=0;i<countA;i++)
{
for(int j=0;j<countB;j++)
{
if (a[i]==b[j]){
ra[k]=a[i];
k++;
}
}
}
ra[k]='\0';
for(i=0;i<strlen(ra);i++)
{
for(int j=0;j<strlen(ra);j++)
{
if(j!=i&&ra[i]==ra[j]){
del(ra,i);
i=0;j=0;
}
}
}
ra[i]='\0';
return ra;
}
int main()
{
char a1[20],b1[20],temp1[20],temp2[20];
cout<<"\nEnter string A";
cin>>a1;
cout<<"\nEnter string B";
cin>>b1;
strcpy(temp1,a1);
strcpy(temp2,b1);
cout<<"\ntemp1 and temp2 are   "<<temp1<<"\t"<<temp2;
char* r2=find_common_char(b1,a1);

char* r3=find_common_char2(temp1,temp2);
cout<<"\nr2= "<<r2<<"\nr3="<<r3;
cout<<"\n";
cout<<"\nA="<<a1<<strlen(a1);
cout<<"\nB="<<b1<<strlen(b1);
if(strcmp(r2,r3)==0)
cout<<"\nSatsfiescondition";
else
cout<<"\nNot Satisfied";
return 0;
}