Int count = 3;
Int main()
{
    Int i, sum = 0;
For (I = 0, sum=0; i<count;i+=2, count++){
Static int count = 4;
Sum += count++;
}
Sum += count++;
Printf(“%d %d\n”, count, sum);
Return 0
};

i       auto  count         static count        
0              3                  4
2              4                  5
4              5                  6
6              6
8
-------------------------------------------
4+5+6+6 = 21
-------------------------------------------
              7

sum=sum+count
count ++
就是这样 具体自己算去