feat(Week05): Add exercises and solutions

1 files changed, 24 insertions, 0 deletions

diff --git a/Week05/Exercise10.cpp b/Week05/Exercise10.cpp
new file mode 100644
index 0000000..64fbb4a
--- /dev/null
+++ b/Week05/Exercise10.cpp
@@ -0,0 +1,24 @@
+#include <iostream>
+
+int main() {
+    const unsigned int DIGITS = 8;
+    const unsigned int WEIGHTS[DIGITS] = { 8, 6, 4, 2, 3, 5, 9, 7 };
+
+    unsigned int serial_number;
+    std::cin >> serial_number;
+
+    unsigned int sum = 0;
+    for (int i = DIGITS - 1; i >= 0; i--) {
+        sum += (serial_number % 10) * WEIGHTS[i];
+        serial_number /= 10;
+    }
+
+    unsigned int control_digit = 11 - sum % 11;
+
+    if (control_digit == 10) control_digit = 0;
+    else if (control_digit == 11) control_digit = 5;
+
+    std::cout << control_digit << std::endl;
+
+    return 0;
+}