third_party/lcov/example/example.c

   1 /*
   2  *  example.c
   3  *
   4  *  Calculate the sum of a given range of integer numbers. The range is
   5  *  specified by providing two integer numbers as command line argument.
   6  *  If no arguments are specified, assume the predefined range [0..9].
   7  *  Abort with an error message if the resulting number is too big to be
   8  *  stored as int variable.
   9  *
  10  *  This program example is similar to the one found in the GCOV documentation.
  11  *  It is used to demonstrate the HTML output generated by LCOV.
  12  *
  13  *  The program is split into 3 modules to better demonstrate the 'directory
  14  *  overview' function. There are also a lot of bloated comments inserted to
  15  *  artificially increase the source code size so that the 'source code
  16  *  overview' function makes at least a minimum of sense.
  17  *
  18  */
  19
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include "iterate.h"
  23 #include "gauss.h"
  24
  25 static int start = 0;
  26 static int end = 9;
  27
  28
  29 int main (int argc, char* argv[])
  30 {
  31         int total1, total2;
  32
  33         /* Accept a pair of numbers as command line arguments. */
  34
  35         if (argc == 3)
  36         {
  37                 start   = atoi(argv[1]);
  38                 end     = atoi(argv[2]);
  39         }
  40
  41
  42         /* Use both methods to calculate the result. */
  43
  44         total1 = iterate_get_sum (start, end);
  45         total2 = gauss_get_sum (start, end);
  46
  47
  48         /* Make sure both results are the same. */
  49
  50         if (total1 != total2)
  51         {
  52                 printf ("Failure (%d != %d)!\n", total1, total2);
  53         }
  54         else
  55         {
  56                 printf ("Success, sum[%d..%d] = %d\n", start, end, total1);
  57         }
  58
  59         return 0;
  60 }