Convert int to string

Question

How can I convert an int datatype into a string datatype in C

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string str   intVar ToString     In some conditions  you do not have to use ToString   string str    quot hi  quot    intVar

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The ToString method of any object is supposed to return a string representation of that object   int var1   2   string var2   var1 ToString

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string a   i ToString    string b   Convert ToString i   string c   string Format  quot  0  quot   i   string d     quot  i  quot   string e    quot  quot    i  string f   string Empty   i  string g   new StringBuilder   Append i  ToString

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None of the answers mentioned that the ToString   method can be applied to integer expressions  Debug Assert  1000 1000  ToString     1000000      even to integer literals  Debug Assert 256 ToString  X     100      Although integer literals like this are often considered to be bad coding style  magic numbers  there may be cases where this feature is useful

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string s        2    and you can do nice things like    string s   2   2    you     The result will be       4 you

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Further on to  Xavier s response  here s a page that does speed comparisons between several different ways to do the conversion from 100 iterations up to 21 474 836 iterations   It seems pretty much a tie between   int someInt   0  someInt ToString      this was fastest half the time   and Convert ToString someInt     this was the fastest the other half the time

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Just in case you want the binary representation and you re still drunk from last night s party  private static string ByteToString int value        StringBuilder builder   new StringBuilder sizeof byte    8       BitArray   bitArrays   BitConverter GetBytes value  Reverse   Select b   gt  new BitArray new    b    ToArray        foreach  bool bit in bitArrays SelectMany bitArray   gt  bitArray Cast lt bool gt    Reverse                   builder Append bit    1     0              return builder ToString       Note  Something about not handling endianness very nicely     If you don t mind sacrificing a bit of memory for speed  you can use below to generate an array with pre-calculated string values  static void OutputIntegerStringRepresentations         Console WriteLine  quot private static string   integerAsDecimal   new      quot        for  int i   int MinValue  i  lt  int MaxValue  i                  Console WriteLine  quot  t  quot  0   quot   quot   i             Console WriteLine  quot  t  quot  0   quot  quot   int MaxValue       Console WriteLine  quot   quot

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string myString   myInt ToString

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int num   10  string str   Convert ToString num

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or   string s   Convert ToString num

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using System ComponentModel   TypeConverter converter   TypeDescriptor GetConverter typeof int    string s    string converter ConvertTo i  typeof string

[c#] Convert int to string?

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