Traffic Light Program

#include <stdio.h>

#include <wiringPi.h>

void red(void);
void yellow(void);
void green(void);

int main()
{
        /* set up the wiring pi library functions */
    wiringPiSetup();
    pinMode(0,OUTPUT);
    pinMode(1,OUTPUT);
    pinMode(2,OUTPUT);
    /* pinMode 0 is the GPIO_0 (GPIO Zero) pin that is */
    /* pin #7 on the header - green*/
    /* set up GPIO_0 as an output port (as opposed to input port *    /
    /*pinMode 1 is GPIO_1 yellow and pinMode 2 is GPIO_2 red */

    while(1)
    {

        green();
        delay(300);
        yellow();
        delay(300);
        red();       
        delay(300);

       
    }   
    return (0);
    /* Not necessay in C Code - main() returns 0 <--zero */
    /*at the termination of program */




}

void green(void)
{
    digitalWrite(0,HIGH);
    delay(700);
    digitalWrite(0,LOW);

}

void yellow(void)
{
    digitalWrite(1,HIGH);
    delay(700);
    digitalWrite(1,LOW);
}

void red(void)
{
    digitalWrite(2,HIGH);
    delay(700);
    digitalWrite(2,LOW);
}