Programming Lights

void setup()

{

  pinMode(10,OUTPUT); //Initialize Pin

  pinMode(9,OUTPUT);

  pinMode(8,OUTPUT);

  pinMode(7,OUTPUT);

}



void loop()

{

  digitalWrite(10,HIGH);    //Set the LED On

  delay(50);                      //Wait for 1000ms

  digitalWrite(10,LOW);  //Set the LED Off

  delay(50);                   //Wait for 1 second

  digitalWrite(9,HIGH);

  delay(50);

  digitalWrite(9,LOW);

  delay(50);

  digitalWrite(8,HIGH);

  delay(50);

  digitalWrite(8,LOW);

  delay(50);

  digitalWrite(7,HIGH);

  delay(50);

  digitalWrite(7,LOW);

  delay(50);

  digitalWrite(8,HIGH);

  delay(50);

  digitalWrite(8,LOW);

  delay(50);

  digitalWrite(9,HIGH);

  delay(50);

  digitalWrite(9,LOW);

  delay(50);
}

4)

#include <stdio.h>

#include <math.h>

int main(void)

{

/* Declare variables. */

double cysteine, oxygen, carbon, nitrogen, sulfur, hydrogen, n_oxygen, n_carbon, n_nitrogen, n_sulfur, n_hydrogen;

/* Get input */

printf("Input the number of molecules for Cysteine. \n");

printf("Number of Oxygen molecules: \n");

scanf("%lf",&n_oxygen);

printf("Number of Carbon molecules: \n");

scanf("%lf",&n_carbon);

printf("Number of Nitrogen molecules: \n");

scanf("%lf",&n_nitrogen);

printf("Number of Sulfur molecules: \n");

scanf("%lf",&n_sulfur);

printf("Number of Hydrogen molecules: \n");

scanf("%lf",&n_hydrogen);

/* Set variables */

oxygen = 15.9994*n_oxygen;

carbon = 12.011*n_carbon;

nitrogen = 14.00674*n_nitrogen;

sulfur = 32.066*n_sulfur;

hydrogen = 1.00794*n_hydrogen;

/* Compute the formula */

cysteine = (oxygen + carbon + nitrogen + sulfur + hydrogen)/5;

/* Print answer */

printf("The average weight of the atoms in Cysteine is %8.5f \n",cysteine);

/* Exit program. */

return 0;

}