From f0727faab76249aa956012cf060a03ed93e01f26 Mon Sep 17 00:00:00 2001
From: Gregor Kleen <kleen@cip.ifi.lmu.de>
Date: Thu, 3 Nov 2016 15:42:40 +0100
Subject: findMaxOfFloats

---
 findMaxOfFloats.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 findMaxOfFloats.c

(limited to 'findMaxOfFloats.c')

diff --git a/findMaxOfFloats.c b/findMaxOfFloats.c
new file mode 100644
index 0000000..afa6d77
--- /dev/null
+++ b/findMaxOfFloats.c
@@ -0,0 +1,63 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <float.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+
+void main(int argc, char* argv[])
+{
+  float *array = NULL;
+  int arrayLength = 0;
+  int arrayUsage = 0;
+
+  float max = FLT_MIN;
+  float current;
+
+  FILE *fp;
+
+  for (int i = 1; i < argc; i++)
+    {
+      fp = fopen(argv[i], "r");
+      if (fp == NULL)
+        {
+          fprintf(stderr, "Could not open `%s´: %s\n", argv[i], strerror(errno));
+          exit(EXIT_FAILURE);
+        }
+
+      for (int res; res = fscanf(fp, "%f\n", &current); )
+        {
+          if (res == EOF || res != 1)
+            break;
+
+          if (arrayUsage >= arrayLength)
+            {
+              if (arrayLength <= 1)
+                arrayLength = 1;
+
+              // fprintf(stderr, "Reallocating array %d → %d\n", arrayLength, arrayLength * 2);
+              arrayLength *= 2;
+              array = realloc(array, sizeof(float) * arrayLength);
+            }
+
+          array[arrayUsage] = current;
+          arrayUsage++;
+        }
+      
+      if (ferror(fp))
+        {
+          fprintf(stderr, "Error while reading from file `%s´: %s\n", argv[i], strerror(errno));
+          exit(EXIT_FAILURE);
+        }
+
+      fclose(fp);
+    }
+
+  for (int i = 0; i < arrayUsage; i++)
+    {
+      if (array[i] > max)
+        max = array[i];
+    }
+
+  printf("%.2f\n", max);
+}
-- 
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