[C/C++] C - Problem mit FOR-Schleife/Arrays

int iVecData[] = {3, 20, 4, 1, 67}, i=1;
vector<int> iVec(iVecData, &iVecData[5]);

for(vector<int>::const_iterator it=iVec.begin(); it!=iVec.end(); it++, i++)
{
 cout << i << ". Zahl: " << (*it) << endl;
}

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

int main()
{
 int iVecData[] = {3, 20, 4, 1, 67}, i=1;
 vector<int> Vekt(iVecData, &iVecData[5]);

 for(vector<int>::const_iterator it = Vekt.begin(); it != Vekt.end(); it++, i++)
 {
 cout << i << ". Zahl: " << (*it) << endl;
 }

 return 0;
}

#include <stdio.h>

int main( void )
{
 int Blablubb[] = {3, 20, 4, 1, 67};

 for(unsigned i=0; i<5; i++)
 {
 cout << i+1 << ". Zahl: " << Blablubb[i] << endl;
 }

 return 0;
}

#include <stdio.h>

int main( void )
{
 int Blablubb[] = {3, 20, 4, 1, 67};

 for(unsigned i=0; i<5; i++)
 {
 printf("%u. Zahl: %u\n", i+1, Blablubb[i]);
 }

 return 0;
}