C++ 计算数字序列和 (a+aa+aaa+aaaa+aaaaa)

#include "iostream"\nusing namespace std;\n\nint main() {\n int a;\n cout << "请输入数字a（0<a<10）：";\n cin >> a;\n\n int s = 0;\n int temp = a;\n for (int i = 1; i <= 5; i++) {\n s += temp;\n temp = temp * 10 + a;\n }\n\n cout << "s的值为：" << s << endl;\n\n return 0;\n}