Source code matrix effect

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

int Modulus(int iN, int iMod) {
int iQ = (iN/iMod);
return iN - (iQ*iMod);
}

char GetChar(int iGenerator, char cBase, int iRange) {
return (cBase + Modulus(iGenerator, iRange));
}

int main() {
// reng kodu
HANDLE  hConsole;
hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
SetConsoleTextAttribute(hConsole, 2);

char caRow[80];
int j = 7;
int k = 2;
int l = 5;
int m = 1;
while (true) {
int i = 0;

while (i < 80) {
if (caRow[i] != ' ') {
caRow[i] = GetChar(j + i*i, 33, 30);
if (((i*i + k) % 71) == 0) {
SetConsoleTextAttribute(hConsole,  7);
} else {
SetConsoleTextAttribute(hConsole,  2);
}
}
std::cout << caRow[i];
++i;
SetConsoleTextAttribute(hConsole,  2);
}
j = (j + 31);
k = (k + 17);
l = (l + 47);
m = (m + 67);
caRow[Modulus(j, 80)] = '-';
caRow[Modulus(k, 80)] = ' ';
caRow[Modulus(l, 80)] = '-';
caRow[Modulus(m, 80)] = ' ';

Sleep(10);
}
    return 0;
}

// IMG -->  http://i.imgur.com/xoYdOUi.jpg