ENGR 102 Introduction to Engineering Design Spring 2016: February 2016

Monday, February 22, 2016

Program without a function

*Example of a program without functions*/
/*temperature conversion program*/
#include <stdio.h>
#include <math.h>
#define TRUE 1
#define FALSE 0

int main()
{
   int answer_1;
    double celsius;
    double fahr;

   answer_1=TRUE;

   while(answer_1==TRUE) {
      printf("\nInput degrees Fahrenheit for conversion to Celsius (^z to exit): \n");
      scanf("%lf",&fahr);
      celsius=((fahr-32.0)*5.)/9.;
      printf("\n%lf Celcius\n\n", celsius);
      printf("\nAnother F to C conversion? (0 to exit conversion): \n");
      scanf("%d", &answer_1);
   }
   printf("\nDo you want to input degrees in Celsius for conversion? (yes=1)\n");
   scanf("%d", &answer_1);

    while(answer_1==TRUE) {
      printf("\n\nInput degrees Celsius for conversion to Fahrenheit (^z to exit): \n");
      scanf("%lf",&celsius);
      fahr=(9.0/5.0)*celsius+32.0;
      printf("\n\n%lf Fahrenheit. \n\n",fahr);
      printf("\nAnother C to F conversion? (0 to exit conversion): \n");
      scanf("%d", &answer_1);
     }

   printf("\n\nEnd of program \n");
   return (0);

}

Friday, February 19, 2016

Essentials of C programming

Essential C

ENGR 102 Spring 2016 YouTube Channel

The URL for the ENGR 102 Spring 2016 YouTube Channel is
https://www.youtube.com/playlist?list=PLwZvqob4HyH18nHdqwMuMPBPjtZIAkp0_

// ENGR 121-03      DK      LED GPIO Intro

//Program: LEDgpio1.c

#include <stdio.h>

#include <wiringPi.h>

// Need wiringPi.h  include file for specific instructions for GPIO

int

main(

){

    int i;

    wiringPiSetup(); // Sets up the I/O pins and instructions for wiringPi

    // Attach my LED and its resistor (diagram is provided

    // in your Fritzing wiring Diagram

    //Use GPIO 0 pin 11 to turn on and off LED

    // Set up my GPIO connector pin 11 to be an OUTPUT

    pinMode(0,OUTPUT);

    digitalWrite(0,HIGH); //Turn ON GPIO to 3.3V  or HIGH voltage

    for(i=1;i<1000; ++i)

    {

        //waiting or delay function

    }

    digitalWrite(0,LOW); // Turn OFF LED

    delay(2000); // delay 2000 ms

    digitalWrite(0,HIGH);

    delay(5000); // delay by 5000 ms

    digitalWrite(0,LOW);

    printf("\n\n I'm done! All pau! \n\n");

}