/* ---------------------------------------------------------------------  
//   Figure 15.10b:  Reading a data file using the scanf() return value.
//     Read and echo a data file with two numbers on each line, in point  
//     coordinate format, (x, y).                                         
//     Correct end-of-file processing  depends on presence of a newline   
//     character after every data item in file, including the last.       
// --------------------------------------------------------------------- 
*/

#include "tools.h"                  

void main( void )                     
{
    double t, v;     
    char file_name[80];        /* Full path name of file we will read. */
    stream flop;
    int status;            

    banner();            
    
    /* Create stream and open file. ----------------------------------- */
    printf( " What file do you want to read? ");
    scanf( " %79[^\n]", file_name );               /* Read entire line. */          
    flop = fopen( file_name, "r" );
    if (flop == NULL) fatal( " Cannot open %s for reading.\n", file_name );
    
    for (;;) { 
        status = fscanf( flop, " (%lg,%lg)", &t, &v ); /* Read next input */ 
        printf( " Status = %i", status );
        if (feof( flop )) break;              /* Test stream status. --- */
        printf( "%8.2f %14.2f \n", t, v );    /* Echo input. ----------- */ 
        /* Process the input here, if processing is needed. ------------ */   
    }   
    fclose( flop );
    bye();     
}