some programs!!

cs101/dh_01_01.cpp

@@ -0,0 +1,26 @@
+#include <iostream>
+
+using namespace std;
+
+int afford_year(double salary, double price, int current_year = 1, double current_money = 0) {
+    if ((current_money += salary) >= price) { return current_year; }
+    if (current_year > 100) { return -1; }
+    return afford_year(salary * 1.08, price * 1.10, current_year + 1, current_money);
+}
+
+int main() {
+    ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    double money, price;
+    int ans;
+    cin >> money >> price;
+
+    if ((ans = afford_year(money, price)) == -1) {
+        cout << "Forget it." << endl;
+    } else {
+        cout << ans << endl;
+    }
+
+    return 0;
+}