File content as of revision 0:c72235e68f52:

#include "mbed.h"

DigitalOut LED[] = {(LED1), (LED2), (LED3), (LED4), (LED5), (LED6), (LED7)};// declare 7 LEDs

float delayTime = .05;

int main()
{
    while(1)
    {
        delayTime = 0.05;
        for(int x = 0; x < 7; x++)
        {
            LED[x] = 1; // turn on
            wait(.2); // delay
        
            LED[x] = 0; // turn off
            wait(delayTime); // delay
        }
        for(int x = 6; x >= 0; x--)
        {
            LED[x] = 1; // turn on
            wait(.2); // delay
        
            LED[x] = 0; // turn off
            wait(delayTime); // delay
        }

        for(int x = 0; x < 7; x++)
        {
            LED[x] = 1; // turn on
            wait(delayTime); // delay
        }
        for(int x = 6; x >= 0; x--)
        {
            LED[x] = 0; // turn off
            wait(delayTime); // delay
        }
        

    }
}