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 fprintf()               Write Formatted Data to Stream

 #include   <stdio.h>

 int        fprintf(stream,format-string[,argument...]);
 FILE       *stream;                     Pointer to FILE structure
 const char *format-string;              Format control string

    fprintf() prints formatted characters and values to the specified
    output 'stream'.  Any 'arguments' are converted and output as
    specified in 'format-string'.

    Except for the capability to specify the stream to print to,
    fprintf() is identical to printf().  The format string and arguments
    of fprintf() are identical to those of printf(); see printf() for a
    complete description of the format string and arguments.

    Returns:    Number of characters printed.

   -------------------------------- Example ---------------------------------

    The following statements open a file and write formatted data to it.

           #include <stdio.h>

           FILE *stream;
           char *name = "FRANK SMITH";
           int num = 100;
           char sex = 'M';
           char outstr[20];

           main()
           {
               if ((stream = fopen("results.dat","w+")) != NULL) {
                       fprintf(stream,"%d, %s, %c\n", num, name, sex);
                       rewind(stream);
                       fgets(outstr,20,stream);
                       printf(%s\n",outstr);
               }
           }