for_no.cpp

来自「数据结构常用算法合集」· C++ 代码 · 共 13 行

 //for_no.cpp
 #include <iostream.h>
 #include <conio.h>
 void main()
 { int a=10,sum=0,n;
   cout << "输入任一整数n=";
   cin >> n;
   for (;a<=n;)				//如果n<10则不执行循环体,因为条件为假
   sum +=a++;
   cout << "sum=" << sum << endl;
   getch();
 }