added solution

VL03-01-01/main.cc

@@ -0,0 +1,31 @@
+#include <iostream>
+
+int main() {
+
+  // count down from 10 (C)
+  for (int i = 10; i >= 0; i--) {
+    printf("%d\n", i);
+  }
+
+  // count down from 10 (C++)
+  for (int i = 10; i >= 0; i--) {
+    std::cout << i << std::endl;
+  }
+
+  // all capital letters from A to Z (C).
+  for (int i = 65; i <= 90; i++) {
+    printf("%c\n", i);
+  }
+
+  // all capital letters from A to Z (C++).
+  for (int i = 65; i <= 90; i++) {
+    std::cout << char(i) << std::endl;
+  }
+
+  // all capital letters from A to Z (C++).
+  for (char c{'A'}; c <= 'Z'; c++) {
+    std::cout << c << std::endl;
+  }
+
+  return 0;
+}