sem2_2

#include <stdio.h>

int main(int argc, char** argv)
{
 char c, prevc;
 while(c != EOF)
 {
  c = getchar();
  if((c != ' ') && (c != '\t'))
  {
   putchar(c);
  }
  else if((prevc != ' ') && (prevc != '\t') && (prevc != '\n'))
   putchar('\n');
  prevc = c;
 }
 return 0;
}