C

DeitelC/Chapter5/greatestCommonDivisor.c

@@ -0,0 +1,19 @@
+#include <stdio.h>
+
+int gcd (int, int);
+
+int main (void) {
+	printf("%d\n", gcd(15, 20));
+	return 0;
+}
+
+
+
+
+int gcd (int x, int y) {
+	if(!y) {
+		return x;
+	} else {
+		return gcd(y, x % y);
+	}
+}