#include <stdio.h>
 
char *sgets(char *line, size_t size)
{
   size_t i;
   for ( i = 0; i < size - 1; ++i )
   {
      int ch = fgetc(stdin);
      if ( ch == '\n' || ch == EOF )
      {
         break;
      }
      line[i] = ch;
   }
   line[i] = '\0';
   return line;
}
 
int main(void)
{
   int i;
   for ( i = 0; i < 3; ++i )
   {
      char text[20] = "";
      fputs("prompt: ", stdout);
      fflush(stdout);
      printf("text = \"%s\"\n", sgets(text, sizeof text));
   }
   return 0;
}
 
/* my input/output
prompt: 1234567890123456789012345
text = "1234567890123456789"
prompt: text = "012345"
prompt: hello world
text = "hello world"
*/