C / C++ / MFC

CString fmt(double db)
{
	CString cs;
	cs.Format("%f", db);
	return cs;
}

void TheDlg::Test00()
{
	const double dbInf  = 1.0/::sin(0);   //infinite
	const double dbZero = (::fabs(::cos(3.14159/2))<0.9)?0:1; //line 1

	CString cs;
	cs += fmt(dbZero)+"\r\n";          //line 2
	cs += fmt(dbZero * dbInf)+"\r\n";  //line 3
	cs += fmt(0 * dbInf)+"\r\n";       //line 4

	MessageBox(cs);
}

0.000000
-1.#IND00
0.000000

const double dbZero = (0.1<0.9)?0:1;

   #include <stdio.h>

int main(void) {
	int arr []= {1,2,3,4,5,6,7,8,9,10} ; 
	int req = 5;

	Lsearch(arr,&req,10,4); // (sizeof(arr)/sizeof(int)),sizeof(req)
	
	
	return 0;
}


void *Lsearch(void *base,void *key,int n,int elemsize)
  {
  	for(int i = 0 ; i&lt;n;i++)
  	{
  		void *elemAddr = (char*)base + i*elemsize ;
  		if(memcmp(key,base,elemsize)==0) return elemAddr ;
  	}
  	return NULL ;
  }</pre>