Explanation

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int main(int nNumberofArgs, char* pszArgs[])
{
    char szString1[256];
    cout << "Enter string #1:";
    cin.getline(szString1, 128);

    char szString2[128];
    cout << "Enter string #2:";
    cin.getline(szString2, 128);

    concatString(szString1, " - ");

    concatString(szString1, szString2);

    cout << "\n" << szString1 << endl;

    system("PAUSE");
    return 0;
}


void concatString(char szTarget[], const char szSource[])
{
    int targetIndex = 0;
    while(szTarget[targetIndex])
    {
        targetIndex++;
    }
    cout << "\n" << targetIndex << "\n" ;
    int sourceIndex = 0;
    while(szSource[sourceIndex])
    {
        szTarget[targetIndex] =
            szSource[sourceIndex];
        targetIndex++;
        sourceIndex++;
    }

    szTarget[targetIndex] = '\0';
}

Could someone explain the concatString function to me. I understand functions, but am confused by arrays. P.S. I found this on the internet. Thank you!
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