c programming exercises

Author: chasesinghofen

ArrayStudy.c

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+/*Programmer:Chase Singhofen
+Date:
+Specification:Array's Introduction
+*/
+
+//preprocessors
+#include <stdio.h>
+#include <stdlib.h>
+#define SIZE 20//defined contant.
+//main function
+main() {
+	//indexes of an array start with 0. 
+	//int grade1, grade2, grade3 ect.... DON'T USE THIS IN ARRAY!!!!!!!!!!!!!!!!!!!!!!!!!
+	//declared an ARRAY of int variables that has 10 elements in it
+	int grades[10] = { 87, 65, 98, 45 };//initializer are whats in brackets.
+	int i;
+	double rainfall[SIZE];//size is not a variable its an identifier. subs from define (constant).
+	grades[0] = 100;
+
+	printf("the first element is %i\n", grades[0]);//
+	//loop to each element.
+	for (i = 0; i < 10; i++) {//uses loop for control variable to go thru each element of arry 
+		//goes thu zero thru one less than given number.
+		printf("element %i has %i \n", i, grades[i]);//%i not the variables. they are used each time through the loop
+	}
+
+	for (i = 0; i < SIZE; i++) {
+
+		printf("ENTER A RAINFALL AMOUNT: ");
+		scanf_s("%lf", &rainfall[i]);
+		printf("rainfall %i has  %.2lf\n", i, rainfall[i]);
+
+}
+
+
+
+
+
+	//end main function
+	system("pause");
+}

Assignment10.c

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+/*Programmer: chase
+Date: 11/22/2016
+Specification: Assignment 10
+*/
+
+//preprocess directives
+//standard libraries
+#include <stdio.h>
+#include <stdlib.h>
+
+int askNumFahrenheit() {//begin fahrenheit function
+
+	int fahrenheit;
+	printf("Enter a temperature in Fahrenheit:\n");
+	scanf_s("%i", &fahrenheit);
+	return fahrenheit;//return fahrenheit value
+} // ask for the fahrenheit function
+
+int convFahrenheit(int a) {//conversion function fahrenheit to celsius
+
+	int newcelsius;
+	newcelsius = (a - 32) / 1.8;
+	return newcelsius;// returns celsius
+} // fahrenheit to celsius conversion
+
+void printCelsius(int a) {//returns no value
+
+	printf("The converted temperature is %i\xf8 Celsius\n", a); // \xf8 prints degree symbol
+
+}// print converted Celsius function
+
+
+int askNumCelsius() {// function asking for celsius
+
+	int celsius;
+	printf("Enter a temperature in Celsius:\n");
+	scanf_s("%i", &celsius);
+	return celsius;//returns celsius value
+} // ask for the Celsius function
+
+int convCelsius(int a) {
+
+	int newFahrenheit;
+	newFahrenheit = (a * 1.8) + 32;
+	return newFahrenheit;//function returns farenheit
+
+} // Celsius to Fahrenheit conversion formula's
+
+
+void printFahrenheit(int a) {//function returns no value
+
+	printf("The converted temperature is %i\xf8 fehrenheit\n", a);
+
+}// print converted Fahrenheit function
+
+ //main function
+main() {
+
+	int choice = 0, num1, num2;//declarations variables
+
+	while (choice != 3)//enter 3 to quit program.
+	{
+		printf("Choose an option:\n1.) Convert Fahrenheit to Celsius.\n2.) Convert Celsius to Fahrenheit.\n3.) Quit the Program\n\n");
+		scanf_s("%i", &choice);
+		switch (choice)
+		{
+
+		case 1:
+			num1 = askNumFahrenheit();
+			num2 = convFahrenheit(num1);
+			printCelsius(num2);
+			break;
+
+
+		case 2:
+			num1 = askNumCelsius();
+			num2 = convCelsius(num1);
+			printFahrenheit(num2);
+			break;
+
+		case 3:
+			printf("\nend of program--need a Headache medicine-");
+			break;
+			}
+	}//end  main
+	system("pause");
+
+}

HW8inProgress.c

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+/*programmer chase
+date 11/5/16
+specifications-switch problem. 1.	Display the smallest number entered
+2.	Display the largest number entered
+3.	Display the sum of the five numbers entered
+4.	Display the average of the five numbers entered
+*/
+
+#include<stdio.h>>
+#include<stdlib.h>>
+//main funtioin
+main() {
+
+	//variable declarations
+	int choice = 0, highNum = 1, lowNum = 2, sum = 3, avg = 4;
+	//should average number be double?????
+
+	printf("enter 5 numbers\n");
+	scanf_s(" %i %i %i %i" "%i", &choice, &highNum, &lowNum, &sum, &avg);
+	printf("press 1 to enter smallest number\n");
+	printf("press 2 to enter largest number\n");
+	printf("press 3 to enter sum of numbers\n");
+	printf("press 4 to enter avg of numbers\n");
+	printf("select a number\n"); 
+	//use these numbers 18, 21, 17, 44, 9.
+	scanf_s(" %i", &choice);
+
+
+
+
+
+	switch (choice = 0) {
+
+
+		//test case use numbers 1-5
+	case '1':
+		printf("%i is highNum", highNum);
+		break;
+
+	case '2':
+		printf("%i is sum", sum);//the sum just list a number
+		break;
+
+	case '3':
+		printf("%i is lowNum", lowNum);//third line shows smllest 
+		break;							//the smallest entered was 1.
+
+	case '4':
+		printf("%i is avg", avg);//no avg is displayed
+		break;
+
+	default:
+		printf("invalid number\n");//error messege here
+
+	}
+	printf("the smallest number is %i\n", lowNum);
+	printf("the largest number is %i\n", highNum);
+	printf("the sum of numbers is %i\n", sum);
+	printf("the avg number is %.2lf\n", avg);
+
+
+	system("pause");
+}

Quiz 6.c

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+/*Programmers: Isaah Santos, Chase Singhofen, Brandt Barry
+Date: 12-1-16
+Specifications: Quiz 6*/
+#include<stdio.h>
+#include<stdlib.h>
+
+double circleInput()
+{
+	double radius;
+	printf("Please enter the radius of your circle:\n");
+	scanf_s("%lf", &radius);
+	return radius;
+}
+
+double circleArea(double a)
+{
+	double area;
+	area = 3.14 * (a * a);
+	return area;
+}
+
+double circleCircum(double a)
+{
+	double circum;
+	circum = 2 * 3.14 * a;
+	return circum;
+}
+
+void displayCircle(double a, double b)
+{
+	printf("The area of your circle is %.2lf\nThe circumference of your circle is %.2lf.\n", a, b);
+}
+
+double triangleBaseInput()
+{
+	double base;
+	printf("Please enter the base of the triangle:\n");
+	scanf_s("%lf", &base);
+	return base;
+}
+
+double triangleHtInput()
+{
+	double height;
+	printf("Please enter the height of the triangle:\n");
+	scanf_s("%lf", &height);
+	return height;
+}
+
+double triangleArea(double a, double b)
+{
+	double tArea;
+	tArea = (a * b) *0.5;
+	return tArea;
+}
+
+void displayResults(double a)
+{
+	printf("The area of your triangle is %.2lf\n", a);
+}
+
+double sqInput()
+{
+	double length;
+	printf("Please enter the length of the side of your square:\n");
+	scanf_s("%lf", &length);
+	return length;
+}
+
+double sqArea(double a)
+{
+	double area;
+	area = a * a;
+	return area;
+}
+
+double sqPeri(double a)
+{
+	double perimeter;
+	perimeter = a * 4;
+	return perimeter;
+}
+
+void displayArea(double a, double b)
+{
+	printf("The area of your square is %.2lf.\nThe perimeter is %.2lf.\n", a, b);
+}
+
+main()
+{
+	int selection = 0;
+	double a = 0.0, b = 0.0, area = 0.0, circum = 0.0, cnum1 = 0.0, cnum2 = 0.0, cnum3 = 0.0, tnum1 = 0.0, tnum2 = 0.0, tnum3 = 0.0, snum1 = 0.0, snum2 = 0.0, snum3 = 0.0;
+	do  
+	{
+		printf("Select an option from the following list:\n");
+		printf("1. Circle\n2. Triangle\n3. Square\n4. Exit\n");
+		scanf_s("%i", &selection);
+
+		if (selection == 1)
+		{
+			cnum1 = circleInput();
+			cnum2 = circleArea(cnum1);
+			cnum3 = circleCircum(cnum1);
+			displayCircle(cnum2, cnum3);
+		}
+
+		else if (selection == 2)
+		{
+			tnum1 = triangleBaseInput();
+			tnum2 = triangleHtInput();
+			tnum3 = triangleArea(tnum1, tnum2);
+			displayResults(tnum3);
+		}
+
+		else if (selection == 3)
+		{
+			snum1 = sqInput();
+			snum2 = sqArea(snum1);
+			snum3 = sqPeri(snum1);
+			displayArea(snum2, snum3);
+		}
+
+		else if (selection == 4)
+		{
+			printf("Thank you for using this program!\n");
+		}
+
+		/*else
+		{
+			printf("That is not an option!\n");
+		}*/
+	} while (selection != 4);
+
+	system("pause");
+}

Switch (2)fromwill.c

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+/*Programmer-
+Date-
+Specafication- */
+//Preproccessor directives
+#include<stdio.h>
+#include<stdlib.h>
+//main function
+main() {
+	//Variable Decleration
+	int choice=0;
+	double r = 0,circle=0,side=0,square=0;
+	while(choice != 3)
+	{
+	printf("Press 1 for area of circle\n");
+	printf("Press 2 for area of square\n");
+	printf("Press 3 to CY@\n");
+	scanf_s("%i", &choice);
+	switch (choice) {
+	case 1:
+		printf("Enter the radius.\n\n");
+		scanf_s("%lf", &r);
+		circle = 3.14*r*r;
+		printf("Area of circle is %.2lf\n", circle);
+		break;
+	case 2:
+		printf("Enter a side.\n");
+		scanf_s("%lf", &side);
+		square = side*side;
+		printf("Area of square is %.2lf\n\n", square);
+
+		break;
+	case 3:
+		printf("=======================\n==========CY@==========\n=======================\n");
+		system("pause");
+	default:
+		printf("you entered incorrect choice.\n");
+
+
+
+	}
+	}
+	//End main
+	system("pause");
+}