Question

I saw the snippet below somewhere online. The following program doesnt print “hello-out”. The reason I feel is because before it is actually flushed to the console from the buffer,

  #include <stdio.h>
  #include <unistd.h>
  int main()
  {
          while(1)
          {
                  fprintf(stdout,"hello-out");
                  fprintf(stderr,"hello-err");
                  sleep(1);
          }
          return 0;
  }

Is my reason correct? If not what is the correct reason?

Answer 1

You should put \n at the end of the string to have it flushed, or use fflush to force it out.