王閎民

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main(){
   
5.     int a = 0, sum = 0;
   
6.     cout << "請輸入一整數 : ";
   
7.     cin >> a;
   
8.     for (int i = 0; i <= 1000; i += a){
   
9.         sum = sum + i;
   
10.     }
    
11.     cout << "1到1000所有" << a << "的倍數總和為 : " << sum << endl;
    
12.     system ("pause");
    
13.     return 0;
    
14. }

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