for语句

#include<iostream>
using namespace std;

int main()
{
	int sum = 0;
	for (int val = 1;val <=10; ++val)
	{
		sum +=val;
	}
	cout<<"sum of 1 to 10 inclusive is ";
	cout<<sum<<endl;
	return 0;

}

　　

#include<iostream>
using namespace std;

int main()
{
	cout <<"本程序实现计算2的10次方。"<<endl;
	cout <<"========================================================="<<endl;

	int value = 2;
	int pow = 10;
	int result = 1;
	for (int cnt = 0; cnt != pow; ++cnt)
	{
		result *= value;
	}
	cout << value <<" raised to the power of " << pow <<" : \t"<< result <<endl;
	return 0;
}