Float / Floating-Point Data Type
How is "float" datatype used in C++?.
Explanation
The
"float" data type is used to represent floating point numbers. The range of values for the "float" datatype is between +/-3.4e38 to +/-3.4e38. Usually floating point numbers have decimal places.
Example :
#include <iostream.h> void main() { float rad=2; float pi= 3.14159; float area=pi *rad *rad; cout << "Radius of the circle is:"<< rad << '\n'; cout << "Area of the circle is:"<< area <<'\n'; }
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Result:
Radius of the circle is:2
Area of the circle is:12.5664
In the above data type example, the value of "pi" is a floating point number. Also the the value for area of the circle is a floating point number.