1 files changed, 56 insertions, 0 deletions
diff --git a/day2/day2.c b/day2/day2.c
new file mode 100644
index 0000000..d02526f
--- /dev/null
+++ b/day2/day2.c
@@ -0,0 +1,56 @@
+#include <stdio.h>
+
+int min2(int a, int b) {
+  if (a < b) return a;
+  return b;
+}
+int min3(int a, int b, int c) {
+  return min2(min2(a, b), c);
+}
+
+int readsides(int* length, int* width, int* height) {
+  return scanf("%dx%dx%d", length, width, height);
+}
+
+void calcsides(int length, int width, int height, int* side1, int* side2, int* side3) {
+  (*side1) = length * width;
+  (*side2) = width * height;
+  (*side3) = height * length;
+}
+
+void calcperi(int edge1, int edge2, int* peri) {
+  (*peri) = 2 * edge1 + 2 * edge2;
+}
+
+void calcarea(int side1, int side2, int side3, int* area) {
+  (*area) = 2*side1 + 2*side2 + 2*side3 + min3(side1, side2, side3);
+}
+
+void calcribbon(int length, int width, int height, int* ribbon) {
+  int bow, wrap;
+  int side1, side2, side3;
+  calcperi(length, width, &side1);
+  calcperi(width, height, &side2);
+  calcperi(height, length, &side3);
+  wrap = min3(side1, side2, side3);
+  bow = length * width * height;
+  (*ribbon) = wrap + bow;
+}
+
+int main() {
+  int length, width, height;
+  int side1, side2, side3;
+  int area, totalarea = 0;
+  int ribbon, totalribbon = 0;
+
+  while (readsides(&length, &width, &height) > 0) {
+    calcsides(length, width, height, &side1, &side2, &side3);
+    calcarea(side1, side2, side3, &area);
+    calcribbon(length, width, height, &ribbon);
+    totalarea += area;
+    totalribbon += ribbon;
+  }
+
+  printf("Total area: %d\nTotal ribbon: %d\n", totalarea, totalribbon);
+  return 0;
+}