constant floats, floating point variables : float « Data Types « C++ Tutorial

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C++ Tutorial » Data Types » float

2.9.5.constant floats, floating point variables

#include <iostream>                  

using namespace std;   

  

int main(){   

   float rad;                        

   const float PI = 3.14159F;        

  

   cout << "Enter radius of circle: ";

   cin >> rad;                        

   float area = PI * rad * rad;         

   cout << "Area is " << area << endl;

   return 0;   

}

2.9.float
	2.9.1.	float point constant number
	2.9.2.	float number array
	2.9.3.	Read float point numbers from keyboard and save them to a float array
	2.9.4.	Type Conversion: from float to double
	2.9.5.	constant floats, floating point variables
	2.9.6.	Local Float Variables and Parameters: convert the temperature in Fahrenheit to Celsius
	2.9.7.	Display decimal and float with format
	2.9.8.	Define function whose parameter and return value are both float
	2.9.9.	Tests whether two floating-point numbers are approximately equal.
	2.9.10.	Controlling the printing of trailing zeros and decimal points for floating-point values.
	2.9.11.	cin handles double and float type values

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