C / C++ / MFC

#include <windows.h><br />
#include <io.h><br />
#include <fcntl.h><br />
<br />
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, <br />
    LPSTR lpCmdLine, int nCmdShow)<br />
{<br />
	<br />
	int f;<br />
	f = open("c:\\uni.txt",O_RDONLY);<br />
	char str[100];<br />
	read(f,str,100);<br />
	<br />
    MessageBox(NULL, L"வணக்கம்", L"Note", MB_OK);<br />
<br />
<br />
<br />
    return 0;<br />
}

vector <double> vt;
double x;
//...
auto it = vt.begin(); // with older compilers use: vector<double>iterator it = vt.begin(); 
while (it != vt.end())
{
  *it /= x;
   it++;
}

error C2677: binary '/=' : no global operator found which takes type 'std::vector<_Ty>' (or there is no acceptable conversion)	

#include <iostream>
#include <vector>
using namespace std;

int main()
{
  vector <double> vt;
  
  vt.push_back(7.0);
  vt.push_back(5.0);
  vt.push_back(3.0);

  double x = 5.0;

  vector<double>::iterator it = vt.begin(); 
  while (it != vt.end())
  {
    *it /= x;
    cout << *it << endl;
    it++;
  }
}

template <typename collection>
collection operator/( const collection &c, typename collection::value_type divisor )
{
     collection transformed;
     std::transform( c.begin(), c.end(), std::back_inserter( transformed ), [divisor]( collection::value_type to_divide) { return to_divide/divisor } );
     return transformed;
}

long double op_divide (long double d) { return d/5; }
transform (vec1.begin(), vec1.end(), vec2.begin(), op_divide);

long double op_divide( long double numerator, long double denominator ) { return numerator/denominator; }

transform( vec.begin(), vec1.end(), vec2.begin(), std::bind2nd( op_divide, 5.0 ) );

error C2825: '_Fn2': must be a class or namespace when followed by '::'

error C2039: 'first_argument_type' : is not a member of '`global namespace''