下面两个程序，结果为什么会不一样呢？？？？


#include<iostream.h>
int main()
{
int i=1,j;
int sum=0,total=1;
while(i<=10)
{

for(j=1;j<=i;j++)
total*=j;
sum+=total;
i++;
}
cout<<"sum ="<<sum;
return 0;
}


#include<iostream.h>
int main()
{
int i=1,j;
int sum=0,total;
while(i<=10)
{
total=1;
for(j=1;j<=i;j++)
total*=j;
sum+=total;
i++;
}
cout<<"sum ="<<sum;
return 0;
}