C Language and Libraries Help (clang.hlp) (Table of Contents; Topic list)
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Integer-to-ASCII Conversion Functions
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─────Run-Time Library───────────────────────────────────────────────────────
 
     The integer-to-ASCII conversion functions convert the digits of
     the given value to a null-terminated character string and store
     the result in <string>. The _itoa <string> result can be up to 17
     bytes. The _ltoa and _ultoa functions can store up to 33 bytes in
     <string>.
 
     The <radix> argument specifies the base of <value> and must be in
     the range 2-36. If <radix> equals 10 and <value> is negative, the
     first character of the stored string is the minus sign (-).
 
     Return Value
 
     These functions return a pointer to <string>. There is no error
     return.
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