#includeusing namespace std; 错误,未从右至左逐次定义 //void test1(int x=1, float y, int z=0); //1、默认参数:应从右至左逐次定义 void test2(int x, float y=0, int z=0){ cout <<"x="<

#includeusing namespace std; 错误,未从右至左逐次定义 //void test1(int x=1, float y, int z=0); //1、默认参数:应从右至左逐次定义 void test2(int x, float y=0, int z=0){ cout <<"x="<