What is the difference between float and double?
Float and double are both widely used data types in programming that have the ability to store decimal or floating-point numbers. The only difference between them is the precision.
A float is a 32-bit IEEE 754 single-precision floating-point number.
1 bitfor the sign8 bitsfor the exponent23 bitsfor the value.
A float has 7 decimal digits of precision and occupies 32 bits.
A double is a 64-bit IEEE 754 double-precision floating-point number. 1 bit for the sign, 11 bits for the exponent, and 52 bits for the value. A double has 15 decimal digits of precision and occupies a total of 64 bits.
Below is example for further clarification. See how float cannot store the entire value since it has less precision than double.
using System;class HelloWorld{static void Main(){float f = 1F/3; //1F is float value of 1double d = 1D/3; // 1D is 1 stored as a doubleConsole.WriteLine("float: {0} double: {1}", f, d);}}
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