Task: Text processing_1

C: #include <stdio.h>
#include <stdlib.h>
#include <string.h>

static int badHrs, maxBadHrs;

static double hrsTot = 0.0;
static int rdgsTot = 0;
char bhEndDate[40];

int mungeLine( char *line, int lno, FILE *fout )
{
    char date[40], *tkn;
    int   dHrs, flag, hrs2, hrs;
    double hrsSum;
    int   hrsCnt = 0;
    double avg;

    tkn = strtok(line, ".");
    if (tkn) {
        int n = sscanf(tkn, "%s %d", &date, &hrs2);
        if (n<2) {
            printf("badly formated line - %d %s\n", lno, tkn);
            return 0;
        }
        hrsSum = 0.0;
        while( tkn= strtok(NULL, ".")) {
            n = sscanf(tkn,"%d %d %d", &dHrs, &flag, &hrs);
            if (n>=2) {
                if (flag > 0) {
                    hrsSum += 1.0*hrs2 + .001*dHrs;
                    hrsCnt += 1;
                    if (maxBadHrs < badHrs) {
                        maxBadHrs = badHrs;
                        strcpy(bhEndDate, date);
                    }
                    badHrs = 0;
                }
                else {
                    badHrs += 1;
                }
                hrs2 = hrs;
            }
            else {
                printf("bad file syntax line %d: %s\n",lno, tkn);
            }
        }
        avg = (hrsCnt > 0)? hrsSum/hrsCnt : 0.0;
        fprintf(fout, "%s  Reject: %2d  Accept: %2d  Average: %7.3f\n",
                date, 24-hrsCnt, hrsCnt, hrsSum/hrsCnt);
        hrsTot += hrsSum;
        rdgsTot += hrsCnt;
    }
    return 1;
}

int main()
{
    FILE *infile, *outfile;
    int lineNo = 0;
    char line[512];
    const char *ifilename = "readings.txt";
    outfile = fopen("V0.txt", "w");

    infile = fopen(ifilename, "rb");
    if (!infile) {
        printf("Can't open %s\n", ifilename);
        exit(1);
    }
    while (NULL != fgets(line, 512, infile)) {
        lineNo += 1;
        if (0 == mungeLine(line, lineNo, outfile))
            printf("Bad line at %d",lineNo);
    }
    fclose(infile);

    fprintf(outfile, "File:     %s\n", ifilename);
    fprintf(outfile, "Total:    %.3f\n", hrsTot);
    fprintf(outfile, "Readings: %d\n", rdgsTot);
    fprintf(outfile, "Average:  %.3f\n", hrsTot/rdgsTot);
    fprintf(outfile, "\nMaximum number of consecutive bad readings is %d\n", maxBadHrs);
    fprintf(outfile, "Ends on date %s\n", bhEndDate);
    fclose(outfile);
    return 0;
}





Java: import java.io.File;
import java.util.*;
import static java.lang.System.out;

public class TextProcessing1 {

    public static void main(String[] args) throws Exception {
        Locale.setDefault(new Locale("en", "US"));
        Metrics metrics = new Metrics();

        int dataGap = 0;
        String gapBeginDate = null;
        try (Scanner lines = new Scanner(new File("readings.txt"))) {
            while (lines.hasNextLine()) {

                double lineTotal = 0.0;
                int linePairs = 0;
                int lineInvalid = 0;
                String lineDate;

                try (Scanner line = new Scanner(lines.nextLine())) {

                    lineDate = line.next();

                    while (line.hasNext()) {
                        final double value = line.nextDouble();
                        if (line.nextInt() <= 0) {
                            if (dataGap == 0)
                                gapBeginDate = lineDate;
                            dataGap++;
                            lineInvalid++;
                            continue;
                        }
                        lineTotal += value;
                        linePairs++;

                        metrics.addDataGap(dataGap, gapBeginDate, lineDate);
                        dataGap = 0;
                    }
                }
                metrics.addLine(lineTotal, linePairs);
                metrics.lineResult(lineDate, lineInvalid, linePairs, lineTotal);
            }
            metrics.report();
        }
    }

    private static class Metrics {
        private List<String[]> gapDates;
        private int maxDataGap = -1;
        private double total;
        private int pairs;
        private int lineResultCount;

        void addLine(double tot, double prs) {
            total += tot;
            pairs += prs;
        }

        void addDataGap(int gap, String begin, String end) {
            if (gap > 0 && gap >= maxDataGap) {
                if (gap > maxDataGap) {
                    maxDataGap = gap;
                    gapDates = new ArrayList<>();
                }
                gapDates.add(new String[]{begin, end});
            }
        }

        void lineResult(String date, int invalid, int prs, double tot) {
            if (lineResultCount >= 3)
                return;
            out.printf("%10s  out: %2d  in: %2d  tot: %10.3f  avg: %10.3f%n",
                    date, invalid, prs, tot, (prs > 0) ? tot / prs : 0.0);
            lineResultCount++;
        }

        void report() {
            out.printf("%ntotal    = %10.3f%n", total);
            out.printf("readings = %6d%n", pairs);
            out.printf("average  = %010.3f%n", total / pairs);
            out.printf("%nmaximum run(s) of %d invalid measurements: %n",
                    maxDataGap);
            for (String[] dates : gapDates)
                out.printf("begins at %s and ends at %s%n", dates[0], dates[1]);

        }
    }
}