单选题Which of the following assignment is not correct?()A float f = 11.1;B double d = 5.3E12;C double d = 3.14159;D double d = 3.14;.
单选题
Which of the following assignment is not correct?()
A
float f = 11.1;
B
double d = 5.3E12;
C
double d = 3.14159;
D
double d = 3.14;.
参考解析
解析:
浮点数的赋值是带有小数点的数字缺省是double型的,如果在浮点数后面加f或者F则是float,后面加d或者D则是double,科学计数法形式的浮点数也是double型的,而double的精度比float高,将一个高精度的double赋值给一个低精度的float时需要进行强制类型转换,反之则不需要。
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