Float vs Double variable

[Samarth]

I have created an program in c language. The variables are declare before that function. All the number in my program are declare as Float, i want to the difference between Float and Double variable. What is maximum value can be assign to the number if it is declare as Float?

[Zecho]

Float with precision total is 7 digit. double with precision total is 15 digit. float :floating-point number, double :double precision floating-point number. Doubles and floats are useful for imprecise extreme numbers which cannot be written as an integer (not even int64) like 1.35-e27.

[kelfro]

There are three floating point types: float, double and long double. The type double provides at least as much precision as float, and the type long double provides at least as much precision as double.Usually, 'double' contains more _significant_digits_, so, as a general case, 'double' is more precise for *any* values.Also, usually, 'double' has a wider range. The set of values of the type float is a subset of the set of values of the type double; the set of values of the type double is a subset of the set of values of the type long double. The value representation of floating point types is implementation defined.

[Katty]

The declarator for a simple floating-point declaration is an identifier. Double: Double precision floating point number.8bytes : +/- 1.7e +/- 308 (~15 digits). You can initialize a simple floating-point variable with a float constant or with a variable or expression that evaluates to an integer or floating-point number.

[MindSpace]

If you want to use a variable in C, you must declare it specifying which data type we want it to be. You can store a float value in a float variable and a double value in a double variable. Floats are not always faster than doubles. The syntax to declare a new variable is to write the specifier of the desired data type (like int, bool, float...) followed by a valid variable identifier.

[Modifier]

C has a concept of 'data types' which are used to define a variable before its use. The float data type are used in c program to save the numbers with 6 digits of precision. C++ practically offers most of the necessary data types except for a basic data type string. Integers are whole numbers with a range of values, range of values are machine dependent.