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#include <stdio.h>
#include <string.h>
int
main(void)
{
char str[] =
"3BVPSq4xF.K?=u#,"
"G'K<MrDnRr7gH%#,"
"XKf<f%G`w^=?C<#,"
"HgU_AnNR?*PDQU#,"
......

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' J$ |0 ?! p% w" t5 D6 D: c9 |0 B
¡¡¡¡Ò»¼ÒÖ®ÑÔ£¬»¶Ó­ÅÄש¹þ¡£ 
¡¡¡¡1¡¢¿ÉÒÔ¿¼ÂÇÏÈѧϰC. 
/ U$ X+ X/ P; Y ......

C/C++ ±ÊÊÔ¡¢ÃæÊÔÌâÄ¿´ó»ã×Ü


1.ÇóÏÂÃæº¯ÊýµÄ·µ»ØÖµ£¨ ΢Èí£©
int func(x)
{
    int countx = 0;
    while(x)
    {
          countx ++;
          x = x&(x-1);
    ......

¶Á¡¶0 bug C/C++ÉÌÓù¤³ÌÖ®µÀ¡·——¼Ç¼1

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       ¶¯×÷£º¶ÁÈ¡——¼¼Êõ——д³ö£¨ÊäÈë——´¦Àí——Êä³ö£©
       Êý¾Ý½á¹¹¾ö¶¨Êý¾ÝÈçºÎ×éÖ¯£¬°á¶¯ÆðÀ´Ð§Âʽϸß
       Ëã·¨ÓïÑÔ¾ ......

SVD·Ö½âCʵÏÖ

int svd(int m,int n,int withu,int withv,double eps,double tol,
double *a, double *q, double *u, double *v, double *vt)
{

int i,j,k,l,l1,iter,retval;
double c,f,g,h,s,x,y,z;
double *e;

e = (double *)calloc(n,sizeof(double));

retval = 0;
/* Cop ......
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