diff options
Diffstat (limited to 'findMaxOfFloats.c')
-rw-r--r-- | findMaxOfFloats.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/findMaxOfFloats.c b/findMaxOfFloats.c new file mode 100644 index 0000000..afa6d77 --- /dev/null +++ b/findMaxOfFloats.c | |||
@@ -0,0 +1,63 @@ | |||
1 | #include <stdlib.h> | ||
2 | #include <stdio.h> | ||
3 | #include <float.h> | ||
4 | #include <string.h> | ||
5 | #include <errno.h> | ||
6 | #include <unistd.h> | ||
7 | |||
8 | void main(int argc, char* argv[]) | ||
9 | { | ||
10 | float *array = NULL; | ||
11 | int arrayLength = 0; | ||
12 | int arrayUsage = 0; | ||
13 | |||
14 | float max = FLT_MIN; | ||
15 | float current; | ||
16 | |||
17 | FILE *fp; | ||
18 | |||
19 | for (int i = 1; i < argc; i++) | ||
20 | { | ||
21 | fp = fopen(argv[i], "r"); | ||
22 | if (fp == NULL) | ||
23 | { | ||
24 | fprintf(stderr, "Could not open `%s´: %s\n", argv[i], strerror(errno)); | ||
25 | exit(EXIT_FAILURE); | ||
26 | } | ||
27 | |||
28 | for (int res; res = fscanf(fp, "%f\n", ¤t); ) | ||
29 | { | ||
30 | if (res == EOF || res != 1) | ||
31 | break; | ||
32 | |||
33 | if (arrayUsage >= arrayLength) | ||
34 | { | ||
35 | if (arrayLength <= 1) | ||
36 | arrayLength = 1; | ||
37 | |||
38 | // fprintf(stderr, "Reallocating array %d → %d\n", arrayLength, arrayLength * 2); | ||
39 | arrayLength *= 2; | ||
40 | array = realloc(array, sizeof(float) * arrayLength); | ||
41 | } | ||
42 | |||
43 | array[arrayUsage] = current; | ||
44 | arrayUsage++; | ||
45 | } | ||
46 | |||
47 | if (ferror(fp)) | ||
48 | { | ||
49 | fprintf(stderr, "Error while reading from file `%s´: %s\n", argv[i], strerror(errno)); | ||
50 | exit(EXIT_FAILURE); | ||
51 | } | ||
52 | |||
53 | fclose(fp); | ||
54 | } | ||
55 | |||
56 | for (int i = 0; i < arrayUsage; i++) | ||
57 | { | ||
58 | if (array[i] > max) | ||
59 | max = array[i]; | ||
60 | } | ||
61 | |||
62 | printf("%.2f\n", max); | ||
63 | } | ||