1 files changed, 16 insertions, 4 deletions
diff --git a/ctof.c b/ctof.c
index 7e2cbef..b95e20a 100644
--- a/ctof.c
+++ b/ctof.c
@@ -1,5 +1,11 @@
 #include<stdio.h>
 
+#define LOWER 0;
+#define UPPER 300;
+#define STEP 20;
+
+float ctof(int c);
+
 /*
  * Print Celcius-Fahrenheit table for celcius = 0, 20, ... 300.
  */
@@ -7,18 +13,24 @@ main() {
     float fahr, celcius;
     int lower, upper, step;
 
-    lower = 0;      // lower limit of temperature table
-    upper = 300;    // upper limit of temperature table
-    step = 20;      // step size
+    lower = LOWER;      // lower limit of temperature table
+    upper = UPPER;    // upper limit of temperature table
+    step = STEP;      // step size
 
     celcius = lower;
 
     printf("%3s %6s\n", "C", "F");
 
     while (celcius <= upper) {
-        fahr = (9.0 / 5.0) * celcius + 32.0;
+        fahr = ctof(celcius);
         printf("%3.0f %6.1f\n", celcius, fahr);
         celcius = celcius + step;
     }
 }
 
+/*
+ * Convert Celcius to Fahrenheit
+ */
+float ctof(int celcius) {
+    return (9.0 / 5.0) * celcius + 32.0;
+}