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vagen_till_c/ch2/avg_with_function.c

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+#include <stdio.h>
+
+/* A first example from the book "Vägen till C" where we get to use functions.
+ * Here is a function to get the biggest number from a set of numbers.
+ */
+
+float max(float x, float y) // It's return value is a float.
+{
+    if (x > y)
+    {
+        return x;
+    }
+    else
+    {
+        return y;
+    }
+}
+
+int main() // main's return value is an int (return 0 at the bottom).
+{
+    float number, sum, biggest;
+    int ant;
+    sum = 0;
+    biggest = 0;
+    ant = 0;
+
+    printf("Write the numbers\nFinish with EOF\n");
+    
+    while (scanf("%f", &number) == 1)
+    {
+        ant++;
+        sum += number;
+        biggest = max(biggest, number); // biggest goes into x, number into y.
+    }
+
+    printf("Average:    %.2f\n", sum / ant);
+    printf("Biggest:    %.2f\n", biggest);
+
+    return 0;
+}