[C++] vprašanja

char* ime_doc = (pot, datum, end);

int i = (1, 2, 3+4, 5);

    char datum[10];
    _strdate(datum);
    datum[2] = '_';
    datum[5] = '_';  
    std::string path("data/");
    path += datum;
    path += ".dat";
    std::fstream doc(path.c_str(), std::ios::out | std::ios::binary);

struct Podatki
{
       float data;
};

void VnesiPodatke()
{
     int i = 0;
     Podatki temp;
     std::fstream doc(path.c_str(), std::ios::out | std::ios::binary | std::ios::app);
     std::cout << path << " << " ;
     while (std::cin >> temp.data)
     {
           doc.write((char*)&temp, sizeof(temp));       
           std::cout << path << " << " ;
     }
     doc.close();  
}

#include <conio.h>
#include <iostream>
int main()
{
    int ch = getch();
    while(ch != '\x1b') //x1b = ESC tipka
    { 
        ch = getch();
        std::cout << ch << std::endl;
    }
    return 0;
}

__gc class CSerialPort
__nogc struct DCB

#include <windows.h>
#include <iostream>
#include <string>

using namespace std;

#define BUFLEN 20

int main () 
{ 
    string path;
    DWORD byteswritten;
    DWORD bytesread;
    char read[BUFLEN+1];//space for NULL termination
    HANDLE comport;

    cout << "Enter the name of the play you want to run (no more than " << BUFLEN << " characters!)." << endl;
    cin >> path;
    if (path.size() > BUFLEN){
        cerr << "I told you, no more than " << BUFLEN << " characters!\n";
        exit(1);
    }
    //create handle, open COM1
    comport = CreateFile("COM1:",GENERIC_READ | GENERIC_WRITE,0,NULL,OPEN_EXISTING,0,NULL); 
    if (comport == INVALID_HANDLE_VALUE){
        cerr << "Problem opening com port.  GetLastError: \n" << GetLastError() << endl;
        exit(1);
    }
    //write string to COM1
    if (WriteFile(comport,path.c_str(),path.size(),&byteswritten,NULL)){
        cout << byteswritten << " bytes written to com1" << endl;
        //read string back
        if (ReadFile(comport,&read,BUFLEN,&bytesread,NULL)){
            read[bytesread] = '\0';
            //output results
            cout << read << " read from com1" << endl;
            cout << "read " << bytesread << " bytes." << endl;
        }else{
            cerr << "Error reading from com port.  GetLastError: \n" << GetLastError() << endl;
        }
    }else{
        cerr << "Error writing to com port.  GetLastError: \n" << GetLastError() << endl;
    }

    //Close COM1
    CloseHandle(comport);	
    return 0;
}

SYNOPSIS
       #include <string.h>

       int strcmp(const char *s1, const char *s2);

       int strncmp(const char *s1, const char *s2, size_t n);

DESCRIPTION
       The  strcmp()  function  compares the two strings s1
       and s2. It returns an integer less than, equal to, or
       greater than zero if s1 is found, respectively, to be
       less than, to match, or  be greater than s2.

       The strncmp() function is similar, except it only
       compares the first (at most) n characters of s1 and s2.