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If you create new projects in C# and VB.NET, then go directly in the Immediate Window and type this:
? 567 / 1000 C# will return 0, while VB.NET will return 0.567.
To get the same result in C#, you need to type
? 567 / 1000.0 Why is there this difference? Why does C# require the explicit decimal point after 1000?
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Because in VB.NET, the / operator is defined to return a floating-point result. It widens its inputs to double and performs the division. In C#, the / operator performs integer division when both inputs are integers.
When you divide two integers, C# divides like a child in the third grade: it throws away any fractional remainder. Thus, dividing 17 by 4 returns a value of 4 (C# discards the remainder of 1).
/ Operator (Visual Basic)
Integer division is carried out using the \ Operator (Visual Basic). Integer division returns the quotient, that is, the integer that represents the number of times the divisor can divide into the dividend without consideration of any remainder.
The / operator in C# for integer operands does the "integer division" operation (equivalent to \ operator in VB.NET). For VB.NET, it's the "normal" division (will give fractional result). In C#, in order to do that, you'll have to cast at least one operand to a floating point type (e.g. double) explicitly.
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