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  1. #include <stdio.h>
  2.  
  3. int main(void) {int c,i,n,b=0;n=0;
  4. char a[100]={};
  5. while((c= getchar())!=10){
  6. n++;a[n]=c;}n++;
  7. for(i=0;i<n;i++)if(n<b)b=n;
  8. printf ("%c",a[b]);
  9. }
  10.  
Success #stdin #stdout 0.01s 5404KB
stdin
Did tell me 
stdout