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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><HTML><HEAD> <META NAME="GENERATOR" CONTENT="LinuxDoc-Tools 0.9.20"> <TITLE>cc65 function reference: Alphabetical function reference: atoi</TITLE> <LINK HREF="funcref-62.html" REL=next> <LINK HREF="funcref-60.html" REL=previous> <LINK HREF="funcref.html#toc3" REL=contents></HEAD><BODY><A HREF="funcref-62.html">Next</A><A HREF="funcref-60.html">Previous</A><A HREF="funcref.html#toc3">Contents</A><HR><H2><A NAME="atoi"></A> 3.20 <A HREF="funcref.html#toc3.20">atoi</A></H2><P><BLOCKQUOTE><DL><DT><B>Function</B><DD><P>Convert a string to an integer.</P><DT><B>Header</B><DD><P><CODE><A HREF="funcref-34.html#stdlib.h">stdlib.h</A></CODE></P><DT><B>Declaration</B><DD><P><CODE>int __fastcall__ atoi (const char* s);</CODE></P><DT><B>Description</B><DD><P><CODE>atoi</CODE> converts the given string into an integer.Conversion stops as soon as any invalid character is encountered.</P><DT><B>Limits</B><DD><P><UL><LI>There is no way to detect any conversion errors.</LI><LI>The function does not check for an numerical overflow when converting.</LI><LI>The function is only available as fastcall function, so it may only beused in presence of a prototype.</LI></UL></P><DT><B>Availability</B><DD><P>ISO 9899</P><DT><B>See also</B><DD><P><A HREF="funcref-62.html#atol">atol</A>,<A HREF="funcref-115.html#itoa">itoa</A>,<A HREF="funcref-118.html#ltoa">ltoa</A>,<A HREF="funcref-165.html#ultoa">ultoa</A>,<A HREF="funcref-167.html#utoa">utoa</A></P><DT><B>Example</B><DD><P>None.</P></DL></BLOCKQUOTE></P><HR><A HREF="funcref-62.html">Next</A><A HREF="funcref-60.html">Previous</A><A HREF="funcref.html#toc3">Contents</A></BODY></HTML>⌨️ 快捷键说明
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