代码优化试验——短循环优化（上）[3]

              j += i++;

              j += i++;

              j += i++;

              j += i++;

       }

}

void sum6()

{

       int j = 0;

       for (unsigned i = 1; i < 630001;)

       {

              j += i++;

              j += i++;

              j += i++;

              j += i++;

              j += i++;

              j += i++;

       }

}

void sum7()

{

       int j = 0;

       for (unsigned i = 1; i < 630001;)

       {

              j += i++;

              j += i++;