#include<stdio.h>
#include<string.h>

int main()
{

int i,j,len,v=1;
char str[100];

printf("enter string : ");
scanf("%[^\n]%c",str);

len=strlen(str);

printf("duplicates character found in the string are: ");
  for(i=0;i<len;i++){
    for(j=i+1;j<len;j++){
        if (str[i]==str[j]){
          if (v==1 && str[j]!="\0"){
            printf("%c", str[i]);
            }
            str[j]='\0';
            v++;
            
         }
     v=1;
    }
    
    return 0;
    
   }
   
   // thank you very much sir 
