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ÓÃC++µÄstreanstream:
#include <sstream>
#Include <string>
string num2str(double i)
...{
        stringstream ss;
        ss<<i;
        return ss.str();
}
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int str2num(string s)
 ...{  
        int num;
        stringstream ss(s);
        ss>>num;
        return num;
}
ÉÏÃæ·½·¨ºÜ¼ò±ã, ȱµãÊÇ´¦Àí´óÁ¿Êý¾Ýת»»ËٶȽÏÂý..
C libraryÖеÄsprintf, sscanf Ïà¶Ô¸ü¿ì
¿ÉÒÔÓÃsprintfº¯Êý½«Êý×ÖÊä³öµ½Ò»¸ö×Ö·û»º³åÇøÖÐ. ´Ó¶ø½øÐÐÁËת»»...
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ÒÑÖª´Ó0µã¿ªÊ¼µÄÃëÊý(seconds) £¬¼ÆËã³ö×Ö·û´®"H:M:S",  ÆäÖÐHÊÇСʱ, M£½·ÖÖÓ£¬S£½Ãë
         int H, M, S;
        string time_str;
        H=seconds/3600;
        M=(seconds%3600)/60;
        S=(seconds%3600)%60;
        char ctime[10];
        sprintf(ctime, "%d:%d:%d", H, M, S);             // ½«ÕûÊýת»»³É×Ö·û´®
        time_str=ctime;                                                 // ½á¹û
Óësprintf¶ÔÓ¦µÄÊÇsscanfº¯Êý, ¿ÉÒÔ½«×Ö·û´®×ª»»³ÉÊý×Ö
    char    str[] = "15.455";
    int     i;
    float     fp;
    ssca


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Indent and Format C Program Source(indent manual)

This is Edition 2.2.10 of `The `indent' Manual', for Indent Version
2.2.10, last updated 23 July 2008.
Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996 Free Software
Foundation, Inc. Copyright (C) 1995, 1996 Joseph Arceneaux. Copyright
(C) 1999 Carlo Wood. Copyright (C) 2001 David Ingamell ......

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exp1 + exp2;
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