Rounding a variable to two decimal places C

Question

I am interested in how to round variables to two decimal places  In the example below  the bonus is usually a number with four decimal places  Is there any way to ensure the pay variable is always rounded to two decimal places     pay   200   bonus    Console WriteLine pay

User · Answer

You should use a form of Math Round   Be aware that Math Round defaults to banker s rounding  rounding to the nearest even number  unless you specify a MidpointRounding value   If you don t want to use banker s rounding  you should use Math Round decimal d  int decimals  MidpointRounding mode   like so  Math Round pay  2  MidpointRounding AwayFromZero       005 rounds up to 0 01 Math Round pay  2  MidpointRounding ToEven             005 rounds to nearest even  0 00   Math Round pay  2         Defaults to MidpointRounding ToEven   Why does  NET use banker s rounding

User · Answer

Pay attention on fact that Round rounds   So  I don t know if it matters in your industry or not   but    float a   12 345f  Math Round a 2      result 12 35  and NOT 12 34     To make it more precise for your case we can do something like this    int aInt    int  a 100   float aFloat  aInt  100 0f    result 12 34

User · Answer

Use System Math Round to rounds a decimal value to a specified number of fractional digits   var pay   200   bonus  pay   System Math Round pay  2   Console WriteLine pay     MSDN References    http   msdn microsoft com en-us library system math round aspx http   msdn microsoft com en-us library zy06z30k aspx

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Make sure you provide a number  typically a double is used  Math Round can take 1-3 arguments  the first argument is the variable you wish to round  the second is the number of decimal places and the third is the type of rounding   double pay   200   bonus  double pay   Math Round pay      Rounds to nearest even number  rounding 0 5 will round  down  to zero because zero is even double pay   Math Round pay  2  MidpointRounding ToEven      Rounds up to nearest number double pay   Math Round pay  2  MidpointRounding AwayFromZero

User · Answer

Use Math Round and specify the number of decimal places    Math Round pay 2     Math Round Method  Double  Int32      Rounds a double-precision floating-point value to a specified number   of fractional digits    Or Math Round Method  Decimal  Int32      Rounds a decimal value to a specified number of fractional digits

User · Answer

You can round the result and use string Format to set the precision like this   decimal pay   200 5555m  pay   Math Round pay   bonus  2   string payAsString   string Format   0 0 00    pay

User · Answer

Console WriteLine decimal Round pay 2

User · Answer

decimal pay    1 994444M   Math Round pay   2

[c#] Rounding a variable to two decimal places C#

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