Exercises: Add task0[45]

exercises/task04/iterations.cpp

@@ -0,0 +1,19 @@
+#include <iostream>
+#include <vector>
+
+int main()
+{
+	std::vector<int> xs{0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+
+	for (auto it = xs.begin(); it != xs.end(); ++it) {
+		for (int i = 0; i < *it; i++) {
+			xs.push_back(*it);
+		}
+	}
+
+	std::cout << "Vector: ";
+	for (const auto &x : xs) {
+		std::cout << x << " ";
+	}
+	std::cout << "\n";
+}