循环
只有三种:
while
do..while
for
(if与goto构成的循环不算在内)
从1开始加到指定值:
// while循环 int sum1(int value) { int i = 1, sum = 0; while (i <= value) sum += i++; return sum; } // do..while循环 int sum2(int value) { int i = 1, sum = 0; if (i <= value) do sum += i++; while (i <= value); return sum; } // for循环 int sum3(int value) { int i = 1, sum = 0; for(i; i <= value; i++) sum += i; return sum; }