I want to question about the traffic lights

Projects Programming
1

I use max7219 display 7 segment led.( max7219 scan 8digit), but my code display 8 digit for 8 7-segment led common display.
And now I want to display to digit 4-7 different digit 0-3, can you help me the problem?

void ledxanh1(int n)
{

for (int t=n;t>=0; t--){

// int tenths;
// int secones;

tenths=t%10; // Again divide by 10 and calculate the remainder
secones=t/10%10;
lc.setDigit(0, 0, tenths, false);
lc.setDigit(0, 1, secones, true);
lc.setDigit(0, 2, tenths, false);
lc.setDigit(0, 3, secones, true);
lc.setDigit(0, 4, tenths, false);
lc.setDigit(0, 5, secones, true);
lc.setDigit(0, 6, tenths, false);
lc.setDigit(0, 7, secones, true);

if (tenths==n%10&&secones==n/10%10)
{
digitalWrite(LEDxanh,HIGH);
digitalWrite(LEDdo,LOW);

}

delay (flashDelay);

}
}

2

I want to question about the traffic lights

What does your incomplete code and question have to do with traffic lights?

Perhaps the fine folks at http://snippets-r-us.com could help you with your snippet.