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C\C++ Notes

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´ó²¿·Ö¶¼»á±»ÒÔϵijÌÐòbroken,Õâ¸ö¹¦ÄÜ¿´ÆðÀ´¼òµ¥,ʵ¼ÊÉϺÜÓÐÄѶÈ.ÍøÉÏʵÏֵĴúÂë,³ýÁËÎÒÕÒµ½µÄÒ»¸öÓÃÎļþÖ¸ÕëʵÏÖµÄûÓÐÎÊÌâÍâ,ÆäÓàµÄ¶¼´æÔÚ¸÷ÖÖbug,²»ÐŵĻ°¾ÍÓÃÒÔϵijÌÐò²âÊÔÒ»ÏÂ:-),µ±È»Õâ¸ö³ÌÐòÒ²²»¹»ÍêÉÆ ......

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 ......

ÓÃC/C++³ÌÐò¿ØÖÆ»·¾³±äÁ¿

In C++, how do i go about using setenv to set the display?  I need to set it like this:
export DISPLAY=0.0
1¡¢setenv("DISPLAY",":0.1",1);
If you're calling the xrandr functions from your C++ program, then I would expect setenv() should work for you. The 3rd argument of 1 tells setenv() to ov ......

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