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Kobe Bryant — Wed, 02 Aug 2006 03:11:00 GMT

(t��ng) 数据库的功能�Q�用戯��Ҏ(gu��)��件进行编辑、删除、修�?�{�最��单的功能�Q�！�Q?br /> (t��ng) 希望高手能具体的用程序和我说明下�Q�！�Q?br /> (t��ng) 非常感谢�Q�！�Q?本�hQQ328184275�Q�！�Q?br />

Kobe Bryant 2006-08-02 11:11 发表评论

Kobe Bryant — Fri, 28 Jul 2006 02:49:00 GMT

一个float变量的空间实体，被一个整形指针指向，当该指针间访�Ӟ��float变量的空间实体便现出整�Ş实体的面相，于是34.5�q�个��点数按二进制补码来理解�Q�得出的�l�果变得怪异�?ji��n)�?x��)
34.5=100010.1_{�Q?�Q?br /> (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) (t��ng)} (t��ng)=1.000101*2⁵_{�Q?�Q?br />} (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) =0�Q?0000100�Q?0010100000000000000000
�l�果变成
2³⁰+2²⁵+2¹⁹+2¹⁷=1107951616
原来的程序�ؓ(f��)
#include
using namespace std;
int main()
{ float f= 34.5;
int *ip= reinterpret_cast(&f);
cout<<"float address: "<<&f<<"=>"<cout<<" int address: "<"<<*ip<*ip=100;
cout<<" int: "<<*ip<cout<<" float: "<}
上面�?4.5=100010.1_{�Q?�Q?br /> (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) (t��ng)} (t��ng)=1.000101*2⁵_{�Q?�Q?br />} (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) =0�Q?0000100�Q?0010100000000000000000我看不太�?希望能得��C��们的指点

Kobe Bryant 2006-07-28 10:49 发表评论

Kobe Bryant — Wed, 26 Jul 2006 02:16:00 GMT

有如下程�?br />#include
using namespace std;
int main()
{cout<<("join"=="join" ? "":"not")<<"equal\n";
getchar();
char* str1="good";
char* str2="good";
cout<<(str1==str2 ? "": "not")<<"equal\n";
getchar();
char buffer1[6]="hello";
char buffer2[6]="hello";
cout<<(buffer1==buffer2 ? "" : "not")<<"equal\n";
getchar();
}
书上昄��~�译后结果是
not equal
not equal
not equal
但是我编译后昄��的结果是
equal
equal
not equal
请高手指�Ҏ(gu��)��点哦�Q�！

Kobe Bryant 2006-07-26 10:16 发表评论