C++第4次实验(基础班)—循环结构程序设计(参考答案)-项目1:利用循环求和
编程语言
2018-05-07 20:08:13
阅读次数: 5
-
- #include <iostream>
- using namespace std;
- int main( )
- {
- int sum=0,i;
- for(i=2;i<=1000;i+=2)
- sum+=i;
- cout<<"sum="<<sum<<endl;
- return 0;
- }
-
- #include <iostream>
- using namespace std;
- int main( )
- {
- int sum=0,i;
- for(i=0;i<=1000;++i)
- if(i%2==0)
- sum+=i;
- cout<<"sum="<<sum<<endl;
- return 0;
- }
-
- #include <iostream>
- using namespace std;
- int main( )
- {
- int i=2,sum=0;
- while (i<=1000)
- {
- sum=sum+i;
- i+=2;
- }
- cout<<"sum="<<sum<<endl;
- return 0;
- }
-
- #include <iostream>
- using namespace std;
- int main( )
- {
- int i=0,sum=0;
- while (i<1000)
- {
- i+=2;
- sum=sum+i;
-
- }
- cout<<"sum="<<sum<<endl;
- return 0;
- }
-
- #include <iostream>
- using namespace std;
- int main( )
- {
- int i=2,sum=0;
- do
- {
- sum=sum+i;
- i+=2;
- }
- while (i<=1000);
- cout<<"sum="<<sum<<endl;
- return 0;
- }
-
- #include <iostream>
- using namespace std;
- int main( )
- {
- int i=0,sum=0;
- do
- {
- i+=2;
- sum=sum+i;
- }
- while (i<1000);
- cout<<"sum="<<sum<<endl;
- return 0;
- }
转载自blog.csdn.net/macrohui2017/article/details/71192235