Lab2


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Homework 6

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1,2 /*––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––-*/ /*  This program determines the distance between two points    */ /*  that are specified with latitude and longitude values      */ //Yunfei Pan #include <stdio.h> #include <math.h> #define PI 3.141593 int main(void) { /*  Declare variables and function prototype.  */ double lat1, long1, lat2, long2; double gc_distance(double lat1,double long1, double lat2,double long2); /*  Get locations of two points.  */ printf("Enter latitude north and longitude west "); printf("for location 1: \n"); scanf("%lf %lf",&lat1,&long1); printf("Enter latitude north and longitude west "); printf("for location 2: \n"); scanf("%lf %lf",&lat2,&long2); /*  Print great circle distance.  */ printf("Great Circle Distance: %.0f miles \n", gc_distance(lat1,long1,lat2,long2)); /*  Exit program.  */ return 0; } /*–––...
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Another Day 23

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#include <cmath> #include"date.h" #include <iostream> using namespace std; class date { public: date(); date(int m, int d, int y); void input(); void print1(); void print2(); // Declare private data members. private: int mm, dd, yyyy; char* month; }; date::date() { mm = dd = yyyy = 0; } date::date(int m, int d, int y) { mm = m; dd = d; yyyy = y; } void date::input() { cin >> mm >> dd >> yyyy; } void date::print1() { cout << mm << "/" << dd << "/" << yyyy << endl; } void date::print2() { switch (mm) { case 1: month = "January"; break; case 2: month = "February"; break; case 3: month = "March"; break; case 4: month = "April"; break; case 5: month = "May"; break; case 6: month = "June"; break; case 7: month = "July"; br...
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Homework4

2. a=7500 3. const int BLED = 9; //Blue LED on Pin 9 const int GLED = 10; //Green LED on Pin 10 const int RLED = 11; //Red LED on Pin 11 const int BUTTON1 = 2; //The Button is connected to pin 2 const int BUTTON2 = 3; const int BUTTON3 = 4; const int BUTTON4 = 5; boolean lastButton1 = LOW; boolean lastButton2 = LOW; boolean lastButton3 = LOW; boolean lastButton4 = LOW;//Last Button State boolean currentButton1 = LOW; boolean currentButton2 = LOW; boolean currentButton3 = LOW; boolean currentButton4 = LOW;//Current Button State int ledMode = 0;//Cycle between LED states int bnk = 0; void setup() {   pinMode (BLED, OUTPUT); //Set Blue LED as Output   pinMode (GLED, OUTPUT); //Set Green LED as Output   pinMode (RLED, OUTPUT); //Set Red LED as Output   pinMode (BUTTON1, INPUT);   pinMode (BUTTON2, INPUT);   pinMode (BUTTON3, INPUT);   pinMode (BUTTON4, INPUT); //Set button as input (not required...
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