请大神指导
public class HelloWorld { public static void main(String[] args) { int sum = 0; int num = 2; do { sum+=num; num = num + 2; } while (num<=50 ); System.out.println(" 50以内的偶数之和为：" + sum ); } }why?
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public class HelloWorld { public static void main(String[] args) { int sum = 0; int num = 2; do { sum+=num; num = num + 2; } while (num<=50 ); System.out.println(" 50以内的偶数之和为：" + sum ); } }why?
2016-07-22
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