common alphabet between two strings

FINDING COMMON ALPHABETS B/W TWO GIVEN STRINGS #include<iostream> using namespace std; int main() {     int len1, len2, x;     string s1="AJITH KUMAR", s2="PRAVEEN R";     len1= s1.length();     len2= s2.length();     for(int i=0;i<len1;i++)     {     for(int j=0;j<i;j++)     {     if(s1[i]==s1[j])     {     x=0;     break;     }     }     if(x==0)     {     x= 1;     continue;     }     for(int k=0;k<len2;k++)     {     if(s2[k]==s1[i])     {     cout<<s1[i]<<" ";     break;     }     }     }     return 0 }