#include<stdio.h> #include<string.h> #define n 1000000000 int main(){ char a[n]; int i,j; scanf("%s",a); int len=strlen(a); for(i=0;i<len;i++){ char k=a[i]; for(j=i+1;j<len;j++){ if(k==a[j]) break; } if(j==len) printf("%c",a[i]); } } |
Double click to view unformatted code.