/* Figure 6.2 */
/* Reads each number from an input file and writes it 
 * rounded to 2 decimal places on a line of an output file.
 */
#include <stdio.h>

int 
main(void) 
{
    FILE *inp;         /* pointer to input file */
    FILE *outp;        /* pointer to ouput file */
    double item;
    int input_status;  /* status value returned by fscanf */

    /* Prepare files for input or output */
    inp = fopen("indata.txt", "r");
    outp = fopen("outdata.txt", "w");

    /* Read each item, format it, and write it */ 
    input_status = fscanf(inp, "%lf", &item);
    while (input_status == 1) {
        fprintf(outp, "%.2f\n", item);
        input_status = fscanf(inp, "%lf", &item);
    }

    /* Close the files */
    fclose(inp);
    fclose(outp);

    return (0);
}

/*
File indata.txt
344   55   6.3556   9.4
43.123   47.596

File outdata.txt
344.00
55.00
6.36
9.40
43.12
47.60
*/