a+aa+aaa+aaaa+aaaaa的值

#define _CRT_SECURE_NO_WARNINGS #include <stdio.h> #include <stdlib.h> int Add(int x) { int sum=0,t=0; for (int i = 0; i < 5; ++i) { t = (10 * t + x); //10乘t相當於每次把t向左移一位，再加上x sum += t; //再將和加上t

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