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int a = 10;
int b = 3;
double c= a / b;
System.out.println(c);
int a = 10;
int b = 3;
double c= (double)a / b;
System.out.println(c);
double c= a / b; //将a/b的结果转double型
double c= (double)a / b; //先将a转double型,再做运算
6楼的例子说明的很清楚了
int a = 10;
int b = 3;
double c= a / b;//c = (10/3) = (double)3 = 3.0
System.out.println(c);
int a = 10;
int b = 3;
double c= (double)a / b;//c = (10.0/3) = 3.333333
System.out.println(c);