Question

C++代码 用VS2010一运行输入数据后就出错

输入2个数，求两个数之间的自然数之和。

#include <iostream>

using namespace std;

int main()
{
int v1,v2;

cout<<"Enter two numbers : "<<endl;

cin>>v1>>v2;

int upper,lower;

if(v1 >= v2)
{
v1 = upper ;
v2 = lower;
}
else
{
v1 = lower;
v2 = upper;
}

int sum = 0;
int val = lower;

while(val <= upper)
{
sum += val;
++val;
}

cout<<"The sum of lower to upper inclusive is "<<sum<<endl;
return 0;
}

Answer 1

#include <iostream>

using namespace std;

int main()
{
	int v1,v2;

	cout<<"Enter two numbers : "<<endl;

	cin>>v1>>v2;

	int upper,lower;

	if(v1 >= v2)
	{
		upper=v1 ;
		 lower=v2;
	}
	else
	{
		lower=v1;
		 upper=v2;
	}

	int sum = 0;
	int val = 伏罩lower;

	while(val <= upper)
	{
		sum += val;
		++val;
	}

	cout<<"The sum of lower 察厅链败孙to upper inclusive is "<<sum<<endl;
	return 0;
}

修改代码如上，你搞反了

Answer 2

#include <iostream>

using namespace std;

int main()
{
int v1,v2;

cout<<"Enter two numbers : "<<endl;

cin>>v1>>v2;

int upper,lower;

if(v1 >= v2)
{
upper=v1 ;
lower=v2 ;
}
else
{
upper=v2 ;
lower=v1 ;

}

int sum = 0;
int val = lower;

while(val <= upper)
{
sum += val;
++val;
}

cout<亩宴<"链灶The sum of lower to upper inclusive is "<<棚耐扮sum<<endl;
return 0;
}