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A、for(int i=0; i=0); 喵查答案：int i=0; do { i=10; } while(i>=0);
float m=100, n=200; float &refer_m=m, &refer_n=n;
![定义如下数组：int x[3][3]={1,2,3,4,5,6,7,8,9};则x[1][1]的值是（ ）](http://www.catpuzi.com/wp-content/themes/Git-alpha/timthumb.php?src=http://www.catpuzi.com/wp-content/themes/Git-alpha/assets/img/pic/4.jpg&h=110&w=185&q=90&zc=1&ct=1)
