for 迴圈

基本型

int sum=0;
for (int count=1; count<=MAX; count++)
{
    sum+=count;
}

簡化型

int sum=0;
for (int count=1; count<=MAX; count++)
    sum+=count;

省略型

int sum=0, count=1;
for ( ; count=1; count<=MAX; count++)
    sum+=count;

單行型

int count, sum;
for (count=1, sum=0; count<=MAX; sum+=count, count++);