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#include<stdio.h>
#include<string.h>
int main()
{ 
   char word1[100],word2[100];
   int i,k,j;
   printf("enter a word");
   scanf("%s",&word1[100]);
   printf("enter second word");
   scanf("%s",&word2[100]);
   for(i=0;i<100;i++)
   {
      if(word1[i]='\0')
      {
       for(j=0;j<100;j++)
        {
          if(word2[j]=0)
           { 
                if(word1[i]==word2[j])
                 {
                     printf("%c",word1[i]);
                     for(k=0;k<100;k++)
                         if(word1[k]==word2[i])
                           word1[k]='\0';

}
}
else
break;
}
}
else
break;
}
return 0;
}