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< p>Open APPReprinted assignment of floating point variables in c#
2007-08-25 17:11:00
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Assignment of floating point variables in C#
Assign float variables in C# There is a special case when assigning values; the statement
float y = 5.2; // will not be compiled!
A compiler error will be generated because a numeric constant with a decimal part like 3.5 will be considered by C# as a double value with higher precision, so the compiler will refuse to execute due to the loss of precision. To make such an assignment, the floating-point constant must be explicitly converted to a float value:
float y = (float) 3.5; // No problem; the conversion is done.
Alternatively, you can use the suffix F to force the compiler to treat the constant on the right side of the assignment statement as a floating-point value:
float y = 3.5F; // Yes, we instructed This constant
// should be treated as a floating point value.
Another option is to use double variables directly instead of float variables to represent floating point numbers. In SRS applications, whenever we declare a floating point variable, we use double instead to avoid type conversion operations.
A good way: use double to declare floating-point variables
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Variable definition in C# Syntax for variable definition in C#: ;Here, data_type must be a...
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Float type: occupies 4 bytes, 7 significant digits. Double type: occupies 8 bytes, 15~16 significant digits. The representation of floating point numbers is inaccurate, and neither float nor double is guaranteed to work. Store all real numbers accurately in the computer. The test example is as follows: [cpp] view plain copy #include int main
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Attribute types in C# (15 types ): Bits represent the value range of this type, 2 to the power of digits, but the smallest positive integer in the computer is 0. It is unsigned. Signed represents half of the positive and negative byte (8-bit unsigned integer) sbyte( 8-bit signed integer) short (16-bit signed integer) ushort (16-bit unsigned integer) int (32-bit signed integer) 2147483647 uint (32-bit unsigned integer) long (64-bit signed integer) ulong (64 bit unsigned integer)...
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For example: #include Continue to visit The latest release of C# determines whether floating point numbers double/float are equal 1. Float type and Zero value comparison statement if(x < -0.000001 && x > 0.000001) // !=0 if(x > -0.000001 && x < 0.000001)// =0 2. How to judge the representation of equal floating point numbers between float type and float type It is inaccurate and cannot directly compare whether two numbers are completely equal. Generally, they are considered to be equal to floating point numbers within a certain allowed range. For example, if there are two floating point numbers a and b, the allowed error range is 1e-6 , then abs(a-b)<=1e-6, it can be considered that a and b are equal Continue to visit Misunderstandings about float, double, and decimal in C#
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How to assign float in c#
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