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functions:atoi

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functions:atoi [2017/04/17 14:58]
korshun
functions:atoi [2017/04/17 15:33] (current)
korshun
Line 4: Line 4:
  
 ===== Description ===== ===== Description =====
-Returns s parsed as a decimal number. If s cannot be parsed as a number, returns 0.+Returns s parsed as a decimal integer. If s cannot be parsed as an integer, returns 0.
  
-If s is too big or too small to fit into int, returns [[INT_MAX]] with the sign of the input.+If s is too big or too small to fit into int, returns [[constants:INT_MAX]] with the sign of the input. 
 + 
 +Supports signs and [[:Number prefixes]]. 
 + 
 +<note tip>To parse fixed-point numbers, use [[atof]].</note> 
 + 
 +<note tip>For more flexibility in parsing and error handling, use [[ParseInt]].</note> 
 + 
 +===== Examples ===== 
 +<code> 
 +atoi("123") -> 123 
 +atoi("0") -> 0 
 +atoi("999999999999") -> 2147483647 // Too big 
 +atoi("-99999999999") -> -2147483647 // Too small 
 +atoi("not a number") -> 0 // Error 
 +atoi("1.3") -> 0 // Error 
 +atoi("0xff") -> 255 // Hexadecimal prefix 
 +</code>
  
-Supports [[:Number prefixes]]. 
  
functions/atoi.1492430335.txt.gz · Last modified: 2017/04/17 14:58 by korshun