Question

求1-3+5-7+9-11+...+97-99c语言怎么编

main()
{
int i, element=1 , sum=0 , s=1;
for (i=1;i<=101;i+=2)
{_______________________;
sum=sum+element;
__________________;
}
printf("%d\n",sum);
}

上面的横线填什么

Answer 1

main()
{
int i, element=1 , sum=0 , s=1;
for (i=1;i<=101;i+=2)
{__element=s*i_____________________;
sum=sum+element;
___s=-s_______________;
}
printf("%d\n",sum);
}

Answer 2

main()
{
int
i,
element=1
,
sum=0
,
s=1;
for
(i=1;i<=101;i+=2)
{__element=s*i_____________________;
sum=sum+element;
___s=-s_______________;
}
printf("%d\n",sum);
}