How do I convert uint to int in C

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User · Answer

I would say using tryParse  it ll return  false  if the uint is to big for an int  Don t forget that a uint can go much bigger than a int  as long as you going   0

User · Answer

Assuming you want to simply lift the 32bits from one type and dump them as-is into the other type   uint asUint   unchecked  uint myInt   int asInt   unchecked  int myUint     The destination type will blindly pick the 32 bits and reinterpret them    Conversely if you re more interested in keeping the decimal numerical values within the range of the destination type itself   uint asUint   checked  uint myInt   int asInt   checked  int myUint     In this case  you ll get overflow exceptions if    casting a negative int  eg  -1  to an uint  casting a positive uint between 2 147 483 648 and 4 294 967 295 to an int    In our case  we wanted the unchecked solution to preserve the 32bits as-is  so here are some examples   Examples  int    uint  int      0000000000  00-00-00-00  asUint   0000000000  00-00-00-00  ------------------------------ int      0000000001  01-00-00-00  asUint   0000000001  01-00-00-00  ------------------------------ int      -0000000001  FF-FF-FF-FF  asUint   4294967295  FF-FF-FF-FF  ------------------------------ int      2147483647  FF-FF-FF-7F  asUint   2147483647  FF-FF-FF-7F  ------------------------------ int      -2147483648  00-00-00-80  asUint   2147483648  00-00-00-80    uint    int  uint     0000000000  00-00-00-00  asInt    0000000000  00-00-00-00  ------------------------------ uint     0000000001  01-00-00-00  asInt    0000000001  01-00-00-00  ------------------------------ uint     2147483647  FF-FF-FF-7F  asInt    2147483647  FF-FF-FF-7F  ------------------------------ uint     4294967295  FF-FF-FF-FF  asInt    -0000000001  FF-FF-FF-FF  ------------------------------   Code  int   testInts     0  1  -1  int MaxValue  int MinValue    uint   testUints     uint MinValue  1  uint MaxValue   2  uint MaxValue     foreach  var Int in testInts        uint asUint   unchecked  uint Int       Console WriteLine  int       0 D10    1     Int  BitConverter ToString BitConverter GetBytes Int         Console WriteLine  asUint    0 D10    1     asUint  BitConverter ToString BitConverter GetBytes asUint         Console WriteLine new string  -  30      Console WriteLine new string      30    foreach  var Uint in testUints        int asInt   unchecked  int Uint       Console WriteLine  uint      0 D10    1     Uint  BitConverter ToString BitConverter GetBytes Uint         Console WriteLine  asInt     0 D10    1     asInt  BitConverter ToString BitConverter GetBytes asInt         Console WriteLine new string  -   30

User · Answer

Take note of the checked and unchecked keywords   It matters if you want the result truncated to the int or an exception raised if the result doesnt fit in signed 32 bits  The default is unchecked

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Given    uint n   3   int i   checked  int n     throws OverflowException if n  gt  Int32 MaxValue int i   unchecked  int n     converts the bits only                               i will be negative if n  gt  Int32 MaxValue  int i    int n    same behavior as unchecked   or  int i   Convert ToInt32 n     same behavior as checked   --EDIT  Included info as mentioned by Kenan E  K

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int intNumber    int uintNumber    Depending on what kind of values you are expecting  you may want to check how big uintNumber is before doing the conversion  An int has a max value of about  5 of a uint

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Assuming that the value contained in the uint can be represented in an int  then it is as simple as   int val    int  uval

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Convert ToInt32   takes uint as a value

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uint i   10  int j    int i    or   int k   Convert ToInt32 i

[c#] How do I convert uint to int in C#?

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