++ Homework 2 Files

Homework2/dhms.c

@@ -0,0 +1,40 @@
+// header files
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+// local constants
+#define SECONDS_IN_DAY 86400
+#define SECONDS_IN_HOUR 3600
+#define SECONDS_IN_MINUTE 60
+
+#define TIME_CONSTANT_SECONDS 8675309
+
+/*
+Name: Day/Hour/Minute/Second Calculator
+Process: Given a number of seconds, 
+                      figure out how many days, hours, minutes and seconds fits.
+Function input/parameters: NONE
+Function output/parameters: NONE
+Function output/returned: NONE
+Device input/---: NONE
+Device output/---: NONE
+Dependencies: included by standard libraries
+*/
+int main()
+{
+    // define local variables
+    int totalDays, totalHours, totalMinutes, totalSeconds;
+    // do calculations
+    // need to modulo then divide by last time unit for each part.
+    totalSeconds = TIME_CONSTANT_SECONDS % SECONDS_IN_MINUTE;
+    totalMinutes = (TIME_CONSTANT_SECONDS % SECONDS_IN_HOUR) / SECONDS_IN_MINUTE;
+    totalHours = (TIME_CONSTANT_SECONDS % SECONDS_IN_DAY) / SECONDS_IN_HOUR;
+    totalDays = (TIME_CONSTANT_SECONDS % (SECONDS_IN_DAY * 30)) / SECONDS_IN_DAY;
+    // display results
+    printf("In %d seconds, there are: %d days, %d hours, %d minutes, %d seconds\n", 
+      TIME_CONSTANT_SECONDS, totalDays, totalHours, totalMinutes, totalSeconds);
+    // return success
+    return 0;
+}

Homework2/ohm.c

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+// header files
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+// local constants
+#define AMPS_IN_SYSTEM 15
+#define VOLTS_IN_SYSTEM 120
+
+/*
+Name: Ohm's Law
+Process: Given amps and volts, 
+                calculate how much resistance in Ohms is present in this system.
+Function input/parameters: NONE
+Function output/parameters: NONE
+Function output/returned: NONE
+Device input/---: NONE
+Device output/---: NONE
+Dependencies: included by standard libraries
+*/
+int main()
+{
+    // define local variables
+    int calculatedOhms;
+    // do calculations
+    calculatedOhms = VOLTS_IN_SYSTEM / AMPS_IN_SYSTEM;
+    // display results
+    printf("%d amps of current at %d volts requires %d ohms of resistance.\n", 
+                              AMPS_IN_SYSTEM, VOLTS_IN_SYSTEM, calculatedOhms);
+    // return success
+    return 0;
+}

Homework2/quadratic.c

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+// header files
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+// local constants
+#define QUADRATIC_A 2
+#define QUADRATIC_B -4
+#define QUADRATIC_C -3
+
+/*
+Name: Quadratic Formula Root Finder
+Process: 
+Function input/parameters: NONE
+Function output/parameters: NONE
+Function output/returned: NONE
+Device input/---: NONE
+Device output/---: NONE
+Dependencies: included by standard libraries
+*/
+int main()
+{
+    // define local variables
+    double positiveRoot, negativeRoot;
+    // do calculations
+    positiveRoot = (-QUADRATIC_B + sqrt((QUADRATIC_B * QUADRATIC_B) - 
+                            (4 * QUADRATIC_A * QUADRATIC_C))) / (2*QUADRATIC_A);
+    negativeRoot = (-QUADRATIC_B - sqrt((QUADRATIC_B * QUADRATIC_B) - 
+                            (4 * QUADRATIC_A * QUADRATIC_C))) / (2*QUADRATIC_A);
+    // display results
+    printf("The roots of the quadratic %dx^2 + %dx + %d are: %f & %f.\n", 
+           QUADRATIC_A, QUADRATIC_B, QUADRATIC_C, positiveRoot, negativeRoot);
+    // return success
+    return 0;
+}

Homework2/seconds.c

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+// header files
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+// local constants
+#define SECONDS_IN_YEAR 31449600
+#define SECONDS_IN_WEEK 604800
+#define SECONDS_IN_DAY 86400
+#define SECONDS_IN_HOUR 3600
+#define SECONDS_IN_MINUTE 60
+
+#define TIME_CONSTANT_YEARS 3
+#define TIME_CONSTANT_WEEKS 6
+#define TIME_CONSTANT_DAYS 5
+#define TIME_CONSTANT_HOURS 2
+#define TIME_CONSTANT_MINUTES 5
+
+/*
+Name: Seconds in TIME_CONSTANT
+Process: Calculates the amount of time in seconds that an amount of 
+                                years/weeks/days/hours/minutes in total seconds.
+Function input/parameters: NONE
+Function output/parameters: NONE
+Function output/returned: NONE
+Device input/---: NONE
+Device output/---: NONE
+Dependencies: included by standard libraries
+*/
+int main()
+{
+    // define local variables
+    int totalTime;
+    // do calculations
+    totalTime = (TIME_CONSTANT_YEARS * SECONDS_IN_YEAR) + 
+                (TIME_CONSTANT_WEEKS * SECONDS_IN_WEEK) + 
+                  (TIME_CONSTANT_DAYS * SECONDS_IN_DAY) + 
+                (TIME_CONSTANT_HOURS * SECONDS_IN_HOUR) + 
+                (TIME_CONSTANT_MINUTES * SECONDS_IN_MINUTE);
+    // display results
+    printf("The total number of seconds in %d years, %d weeks, %d days, %d hours, and %d minutes is: %d seconds\n", 
+              TIME_CONSTANT_YEARS, TIME_CONSTANT_WEEKS, TIME_CONSTANT_DAYS, 
+                         TIME_CONSTANT_HOURS, TIME_CONSTANT_MINUTES, totalTime);
+    // return success
+    return 0;
+}

Homework2/volume.c

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+// header files
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+// local constants
+#define EDGE_LENGTH_MULTIPLIER 5
+// this volume is in centimeters
+#define TOP_FRACTION 5*(3 + sqrt(5))
+#define BOTTOM_FRACTION 12
+
+/*
+Name: Volume of Icosahedron
+Process: Given an edge of an Icosahedron, calculate the volume of the shape. 
+                               Uses a formula found on Google to calculate this.
+Function input/parameters: NONE
+Function output/parameters: NONE
+Function output/returned: NONE
+Device input/---: NONE
+Device output/---: NONE
+Dependencies: included by standard libraries
+*/
+int main()
+{
+    // define local variables
+    double icosahedronVol;
+    // do calculations
+    icosahedronVol = (TOP_FRACTION / BOTTOM_FRACTION) * 
+     (EDGE_LENGTH_MULTIPLIER * EDGE_LENGTH_MULTIPLIER * EDGE_LENGTH_MULTIPLIER);
+    // display results
+    printf("An Icosahedron with edge length %d cm has volume %f cm.\n", 
+                                        EDGE_LENGTH_MULTIPLIER, icosahedronVol);
+    // return success
+    return 0;
+}