Prepare for Spring 2025.

examples/c/lost_copy.c

@@ -0,0 +1,9 @@
+int main() {
+  int i = 0;
+  int result = 0;
+  do {
+    result = i;
+    i++;
+  } while (i < 4);
+  return result;
+}

examples/c/swap.c

@@ -0,0 +1,10 @@
+int main() {
+  int a = 1;
+  int b = 2;
+  do {
+    int t = a;
+    a = b;
+    b = t;
+  } while (b == 1);
+  return a * 10 + b;
+}