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What is the difference between float and double? - Stack Overflow
I've read about the difference between double precision and single precision. However, in most cases, float and double seem to be interchangeable, i.e. using one or the other does not seem to affec...

c - 'float' vs. 'double' precision - Stack Overflow
The 53 bits of double s give about 16 digits of precision. The 24 bits of float s give about 7 digits of precision.

C语言中,double**和double (*) [5]有什么区别?怎么理解? - 知乎
double** 是指向 double* 类型的指针类型。 区别不是很显然的吗? double [5] 类型能隐式转换成 double* 类型,但它们不是同一类型。 可以考虑一下 short 和 long 这两种类型是能相互隐式转换的,但它们显然没有因此变成同一类型。

c++ - Double precision - decimal places - Stack Overflow
From what I have read, a value of data type double has an approximate precision of 15 decimal places. However, when I use a number whose decimal representation repeats, such as 1.0/7.0, I find tha...

c语言中float、double的区别和用法? - 知乎
C语言中,float和double都属于 浮点数。区别在于:double所表示的范围,整数部分范围大于float,小数部分,精度也高于float。 举个例子: 圆周率 3.1415926535 这个数字,如果用float来表示,最多只能精确到小数点后面的6位。而double大约能精确到小数点后面的15位左右。具体精确到几位,跟所用的 编译器 ...

What exactly does Double mean in java? - Stack Overflow
A Double in Java is the class version of the double basic type - you can use doubles but, if you want to do something with them that requires them to be an object (such as put them in a collection), you'll need to box them up in a Double object.

Should I use double or float? - Stack Overflow
A double has a much higher precision due to it's difference in size. If the numbers you are using will commonly exceed the value of a float, then use a double. Several other people have mentioned performance isssues. That would be exactly last on my list of considerations. Correctness should be your #1 consideration.

Correct format specifier for double in printf - Stack Overflow
Your variant is as correct as it ever gets. %lf is the correct format specifier for double. But it became so in C99. Before that one had to use %f.

Difference between long double and double in C and C++
Possible Duplicate: long double vs double I am new to programming and I am unable to understand the difference between between long double and double in C and C++. I tried to Google it but was unab...

How do I print a double value with full precision using cout?
In my earlier question I was printing a double using cout that got rounded when I wasn't expecting it. How can I make cout print a double using full precision?

 

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