diff --git a/02-vars-and-math.c b/02-vars-and-math.c
index 2fd0e3a..1faca06 100644
--- a/02-vars-and-math.c
+++ b/02-vars-and-math.c
@@ -1,20 +1,10 @@
 #include <stdio.h>
 
-/* print Fahrenheit-Celsius table
-	for fahr = 0, 20, ..., 300 */
+/* print Fahrenheit-Celsius table */
 int main()
 {
-	float fahr, celsius;
-	int lower, upper, step;
+	int fahr;
 
-	lower = 0;
-	upper = 300;
-	step = 20;
-
-	fahr = lower;
-	while (fahr <= upper) {
-		celsius = (5.0/9.0) * (fahr-32.0);
-		printf("%3.0f %6.2f\n", fahr, celsius);
-		fahr = fahr + step;
-	}
+	for (fahr = 0; fahr <= 300; fahr = fahr + 20)
+		printf("%3d %6.1f\n", fahr, (5.0/9.0)*(fahr-32));
 }