How to use VECTOR to output your processes.

[BitHacker]

A little tutorial on how to use vectors.

Declaration:

vector<elemType> vecName;        --         Creates the empty vector object vecName without any elements

vector<elemType> vecName(otherVecName);     --       Creates the vector object vecName and initializes vecName to the elements of the vector otherVecName. vecName and othervecName are of the same type.

vector<elemType> vecName(size);          --         Creates the vector object vecName of size size. vecName is initialized using the defualt values.

vector<elemType> vecName(n, elem);     --     Creates the vecotr object vecName of size n. vecName is initialized using n copies of the element elem.

There are only certain functions you can use on vector containers. Which are:

vecName.at(index)      --       Returns the element at the position specified by index.

vecName.[index]         --       Returns the element at the position specified by index.

vecName.front()          --       Returns the first element. (Does not check whether the object is empty.)

vecName.back()         --       Returns the last element. (Does not check whether the object is empty.)

vecName.clear()         --       Deletes all elements from the object.

vecName.push_back(elem)      --        A copy of elem is inserted into vecName at the end.

vecName.pop_back()              --         Delete the last element of vecName.

vecName.empty()                   --         Returns true if the object vecName is empty and false otherwise.

vecName.size()                      --         Returns the number of elements currently in 

vecName.maxsize()               --          Returns the maximum number of elements that can be inserted into the object vecNames.

This teaches you how to list out the elements of the vector container.

#undef UNICODE
#include <vector>
#include <string>
#include <windows.h>
#include <Tlhelp32.h>
#include <iostream>

using namespace std;

int main(void)
{
    vector<string>processNames;
    PROCESSENTRY32 pe32;
    pe32.dwSize = sizeof(PROCESSENTRY32);
    HANDLE hTool32 = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, NULL);
    BOOL bProcess = Process32First(hTool32, &pe32);
    if(bProcess == TRUE)
    {
        while((Process32Next(hTool32, &pe32)) == TRUE)
            processNames.push_back(pe32.szExeFile);
    }
    CloseHandle(hTool32);
    cout << "Number of Processes: " << processNames.size() << endl;
    cin.ignore(1);
    for(int j = 0; j < processNames.size(); j++)
	cout << processNames[j] << " " << endl;    
    cout << endl;
    cout << "Press Enter To Exit: " << endl;
    cin.ignore(1);
    return 0;
}

The #undef UNICODE disables unicode within the vector container. Otherwise you will get compile errors on visual studio 2010.

-Bit_Hacker