/*write a program which copies its input to output and replaces
each string of multiple blanks by one blank*/

#include <stdio.h>
#define IN 1
#define OUT 0

int main ()
{
  int c, b, z;  //c searches the chars, b goes IN on the first space,
                //z will be used to make it work for more than one space

  b = OUT;
  z = OUT;  //beginning of the loop, both are set to zero
  while ((c = getchar()) != EOF)  //we search all the chars
    if (c == ' ')
    ++b;    //If c picks up a space we set b to IN, starting the first loop

      while (b == IN) //first loop
      {

        if (c == ' ') //if the char after the first space is another space we
                      // start the second loop by setting z to IN
        {
        b = OUT;
        z = IN;
        }

          if (z == IN)  //second loop
          {
            if (c == ' ')   //if we find another space in the second loop we
            b = IN;        //start the first loop again
          }

      else printf("%c, c");  //if we dont find a space we print the char

  printf("%c, c"); //I guess this prints all the chars that are not spaces??

      }
return(0);
}