Added files from first programming course at OSU

OSU Coursework/CS 161 - Intro to Programming I/Labs/Lab 1/main.c

@@ -0,0 +1,9 @@
+#include <stdio.h> 
+
+int main (void) {  
+
+ printf("User:perrenc\nName:Corwin\nFavorite Color:Dark Neon Green\n");  
+
+ return 0;  
+
+}

OSU Coursework/CS 161 - Intro to Programming I/Labs/Lab 2/lab2.c

@@ -0,0 +1,85 @@
+/** 
+Change Machine Source File for Lab2 in CS 151
+Made by Corwin Perren
+
+Takes a money amount as an input and tells you the appropriate number of each bill and 
+coin less than or equal to $20 increments to make up total amount.
+*/
+
+#include <stdio.h> /** Include the stdio.h file to allow for printf() to be used*/
+
+/** @brief Main Function
+		@param void This function does not accept any input variables
+		@return This function would return an error code to the OS if needed.
+*/
+int main (int argc, char **argv) {
+
+/** Original money amount and all bill/coin variables. x is used for manipulation of 
+the original amount. 
+*/
+	double i = 00.00; /* initial input variable */
+	int twenties = 0; /* $20 variable */		
+	int tens = 0; /* $10 variable */
+	int fives = 0; /* $5 variable */
+	int ones = 0; /* $1 variable */
+	int quarters = 0; /* $.25 variable */
+	int dimes = 0; /* $.1 variable */
+	int nickels = 0; /* $.05 variable */
+	int pennies = 0; /* $.01 variable */
+	int x = 0; /* used for the running total as the code progresses */
+	
+	system("clear"); /** Clears the screen */
+	
+	/** Prompts the user for a numerical input, stores it, multiplies it by 100, then
+	stores that value as an integer on x. 
+	*/	
+	printf("Please enter the amount of money to make change for: ");
+	scanf("%lf",&i);
+	i = i*100 ;
+	x = (int)i;
+	
+	/** Takes the money amount, determines the number of each bill or coin, and subtracts
+	that number of bills from the total amount to calculate the next amount.
+	*/
+	twenties = x/2000;
+	x = x-twenties*2000;
+	tens = x/1000;
+	x = x-tens*1000;
+	fives = x/500;
+	x = x-fives*500;
+	ones = x/100;
+	x = x-ones*100;
+	quarters = x/25;
+	x = x-quarters*25;
+	dimes = x/10;
+	x = x-dimes*10;
+	nickels = x/5;
+	x = x-nickels*5;
+	pennies = x/1;
+	
+	system("clear"); /** Clears the screen */
+	
+	/** Print the original input amount, then the number of bills/coins needed only
+	if that number is not zero.
+	*/
+	printf("%.2lf 	- Original Amount\n\n", (i/100));
+	if (twenties != 0){
+		printf("%i 	- Twenties\n",twenties);
+	}if (tens != 0){
+		printf("%i 	- Tens\n",tens);
+	}if (fives != 0){
+		printf("%i 	- Fives\n",fives);
+	}if (ones != 0){
+		printf("%i 	- Ones\n",ones);
+	}if (quarters != 0){
+		printf("%i 	- Quarters\n",quarters);
+	}if (dimes != 0){
+		printf("%i 	- Dimes\n",dimes);
+	}if	(nickels != 0){
+		printf("%i 	- Nickels\n",nickels);
+	}if (pennies != 0){
+		printf("%i 	- Pennies\n",pennies);
+	}
+	
+	return (0);
+}

OSU Coursework/CS 161 - Intro to Programming I/Labs/Lab 3/lab3.c

@@ -0,0 +1,50 @@
+/** ECE 151 Lab 3 Source File
+ * Modified by Corwin Perren
+ */
+
+#include <stdio.h> /** included to allow for printf() to be used*/
+#include <time.h> /** included to allow time() to be used*/
+#include <stdlib.h> /** include to allow rand() and srand() to be used*/
+/** @brief main Function
+@param void This function does not accept any input variables
+@return This function would return an error code to the OS if needed.
+*/
+int main(int argc, char **argv) {
+
+	srand(time(NULL)); /* seed the number generator */
+	int x = rand(); /* variable to hold our random integer */
+	int i = 0; /* varaible used for user input */
+	int guesses = 0; /* used to track number of user guesses */
+
+/* keeps randomizing x until it reaches a value under 50 */
+	while (x > 50) {
+		x = rand();
+	}
+	
+/* clears the terminal and asks the user for an input */
+	system ("clear");
+	printf("What is your guess for the random number under 50?\n", x);
+	
+	
+/* loops through asking the user for guesses until five guesses have been made */
+	while (guesses < 5){ 
+		
+		scanf ("%d", &i); /* takes in user input */
+		if (i < x) {
+/* prints if the user's value is less than x */
+			system("clear");
+			printf("Your guess is too low.\n");
+		}else if (i == x) {
+/* prints if the user's value is x, then breaks */
+			system("clear");
+			printf("You guessed right!\n");
+			break;
+		}else if (i > x) {
+/* prints if the user's value is larger than x */
+			system("clear");
+			printf("Your guess is too high.\n"); 
+		}
+
+		guesses = ++guesses; /* incriments the number of guesses the user has made */
+}
+}

OSU Coursework/CS 161 - Intro to Programming I/Labs/Lab 3/lab3_extended.c

@@ -0,0 +1,73 @@
+/*
+ * Original Author: Corwin A. Perren (perrenc)
+ * File: lab3_extended.c
+ * Created: 2012 January 26, 13:42 by perrenc
+ * Last Modified: 2012 February 2, 01:31 by perrenc 
+ * 
+ * This program tries to guess a number the user has though of. 
+ * It has five tries before erroring out.
+ */	
+
+#include <stdio.h> /** included to allow for printf() to be used*/
+#include <time.h> /** included to allow time() to be used*/
+#include <stdlib.h> /** include to allow rand() and srand() to be used*/
+/** @brief main Function
+@param void This function does not accept any input variables
+@return This function would return an error code to the OS if needed.
+*/
+int main (int argc, char **argv) {
+
+	srand(time(NULL)); /* seed the number generator */
+	int x = 0; /* variable to hold our random integer */
+	int i = 0; /* variable used for user input */
+	int guesses = 0; /* used to track number of user guesses */
+	int max = 51; /* used as a ceiling for guesses */
+	int min = 0; /* used as a floor for guesses */
+
+/* Keeps randomizing x until it reaches a value under 50 */
+	x = rand()%51; /* assigns a value to x less than or equal to 50 that is random */
+	system("clear"); /* clears the screen */
+
+/* Loops through asking the user for guesses until five guesses have been made */
+	while (guesses < 5){
+
+/* Increments the number of guesses, asks the user about how close the computer is to
+ *  guessing the number, then takes the users response, narrows its guess range by 
+ *  changing upper or lower limits, then randomly guesses a new value withing that range.
+ *  After guessing right, it prints success, otherwise after five tries it prints that it
+ *  lost.
+ */ 	
+		guesses = ++guesses;
+		printf("Is your number %d? Enter 1 for too low, 2 for correct, or 3 for too high: ", x);
+		scanf("%i", &i);
+		if(i == 1){
+			min = ++x; /* adjusts guess floor */
+			if(max == min){ /* is about to guess the right value
+					and avoids dividing by zero */
+				x = min;
+				continue;
+			}
+			x = rand()%(max-min) + min; /* used to make a guess within a range */
+		}else if (i == 2){
+			printf("Yay! I guessed right!\n");
+			break;
+		}else if (i == 3){
+			max = --x; /* adjusts guess ceiling */
+			if(max == min){ /* same as previous one */
+				x = min;
+				continue;
+			}
+			x = rand()%(max-min) + min; /* used to make a guess within a 
+						       range */
+		}else if (x != (3 | 2 | 1)){ /* prints an error if uncorrect values are
+						 entered */
+			printf("You have entered an incorrect value, please try again.\n");
+			guesses -= 1;
+		}
+	}
+	if (i != 2){ /* prints that the computer lost */
+		printf("Awww, I lost.\n");
+	}	
+
+}
+

OSU Coursework/CS 161 - Intro to Programming I/Labs/Lab 4/division.c

@@ -0,0 +1,53 @@
+/*
+ * Original Author: Corwin A. Perren (perrenc)
+ * File: division.c
+ * Created: 2012 February 8, 16:58 by perrenc
+ * Last Modified: 2012 February 8, 23:15 by perrenc
+ *
+ * Has the user enter two integers, swaps them if the second one entered is larger than
+ * the first one, then divides the first by the second, first mod second, and the first
+ * by the second as doubles. It then prints out these values along with the equation.
+ */
+ 
+#include <stdio.h>
+
+int main(int argc, char **argv) {
+
+	int userint1; //User input 1
+	int userint2; //User input 2
+	int swap; //Used for swapping input 1 and 2 if 2 is larger than 1
+	double double1; //Used for making a double of userint1
+	double double2; //Used for making a double of userint2
+
+//Clears the screen, and asks the user to enter the two integers
+	system("clear");
+	printf("Please enter an integer: ");
+	scanf("%d", &userint1);
+	printf("Please enter a second integer: ");
+	scanf("%d", &userint2);
+
+//Swaps userint1 and userint2 if userint2 is larger than userint1
+	if(userint2 > userint1){
+		swap = userint1;
+		userint1 = userint2;
+		userint2 = swap;
+	}
+	
+//Prints and error and ends the program if you try and divide by zero	
+	if(userint2 == 0){
+		printf("\nYou cannot divide by zero, program ending...\n\n");
+		return(1);
+	}	
+
+//Prints userint1/userint2 and userint1 mod userint2
+	printf("\n%d / %d = %d\n", userint1, userint2, (userint1 / userint2));
+	printf("%d %% %d = %d\n", userint1, userint2, (userint1 % userint2));
+
+//Converts userint1 and 2 to doubles
+	double1 = userint1;
+	double2 = userint2;
+
+//Prints double1/double2
+	printf("%lf / %lf = %lf\n\n", double1, double2, (double1 / double2));
+	
+}

OSU Coursework/CS 161 - Intro to Programming I/Labs/Lab 4/lab4_1.c

@@ -0,0 +1,58 @@
+/*
+ * Original Author: Corwin A. Perren (perrenc)
+ * File: lab4_1.c
+ * Created: 2012 February 6, 15:10 by perrenc
+ * Last Modified: 2012 February 8, 23:00 by perrenc
+ * 
+ * Asks the user for five floating point values, and prints them
+ * if all are entered correctly, else it ends the program.
+ */
+ 
+#include <stdio.h>
+
+int main(int argc, char **argv) {
+
+	double f1 = -1.0; //First user float value
+	double f2 = -1.0; //Second user float value
+	double f3 = -1.0; //Third user float value
+	double f4 = -1.0; //Fourth user float value
+	double f5 = -1.0; //Fifth user float value
+
+// Clears the screen, then explains what needs to be entered, and what will be printed.
+	system("clear");
+	printf("I am going to ask you to enter 5 different positive floating point numbers.\n");
+	printf("I will end the program as soon as you enter a negative value or a repeat number.\n");
+	printf("I will congratulate you and print out the 5 numbers if you successfully complete the task.\n\n");
+
+/* Has the user input five values, and quits the program if an entered number is negative
+ * or if two numbers entered in a row are the same. If the values are entered correctly,
+ * it prints out the five values the user entered.
+ */
+			printf("Please enter your first number. ");
+			scanf("%lf", &f1);
+			if(f1 < 0){
+				return(0);
+			}	
+			printf("Please enter your second number. ");
+			scanf("%lf", &f2);
+			if((f2 == f1) | (f2 < 0)){
+				return(0);
+			}
+			printf("Please enter your third number. ");
+			scanf("%lf", &f3);
+			if((f3 == f2) | (f3 < 0)){
+				return(0);
+			}
+			printf("Please enter your fourth number. ");
+			scanf("%lf", &f4);
+			if((f4 == f3) | (f4 < 0)){
+				return(0);
+			}
+			printf("Please enter your fifth number. ");
+			scanf("%lf", &f5);
+			if((f5 == f4) | (f5 < 0)){
+				return(0);
+			}
+			printf("\nYour numbers were: %lf, %lf, %lf, %lf, %lf\n\n", f1, f2, f3, f4, f5);
+
+}

OSU Coursework/CS 161 - Intro to Programming I/Labs/Lab 4/lab4_2.c

@@ -0,0 +1,43 @@
+/*
+ * Original Author: Corwin A. Perren (perrenc)
+ * File: lab4_2.c
+ * Created: 2012 February 8, 16:58 by perrenc
+ * Last Modified: 2012 February 8, 23:09 by perrenc
+ *
+ * Asks the users for a number between 1 and 20 and prints up to that number from one
+ * and down to one from that number.
+ * It errors if the value is not within this range.
+ */
+ 
+#include <stdio.h>
+
+int main(int argc, char **argv) {
+
+	int userinput; //Variable for user input
+	int loop; //Used for looping
+
+// Clears the screen and asks the user to input an integere between one and twenty
+	system("clear");
+	printf("Please enter an integer between 1 and 20: ");
+	scanf("%d", &userinput);
+
+// Quits the program if an incorrect value has been entered
+	if((1 > userinput) | (userinput > 20)){
+		printf("You have entered an incorrect value, closing program...\n");
+		return(-1);
+	}
+
+//Prints up from one to the user entered value
+	for(loop = 1 ; (loop <= userinput) ; ++loop){
+		printf("%d ", loop);
+	}
+//Prints newline
+	printf("\n");
+
+//Prints down to one from the user entered number
+	for(loop = userinput ; ((loop <= userinput) & (loop != 0)) ; loop--){
+		printf("%d ", loop);
+	}
+//Prints a newline	
+	printf("\n");
+}

OSU Coursework/CS 161 - Intro to Programming I/Labs/Lab 4/lab4_4.c

@@ -0,0 +1,58 @@
+/* Original Author: Corwin Perren (perrenc)
+ * File: lab4_4.c
+ * Created: 2012 February 08, 21:05 by perrenc
+ * Last modified: 2012 February 08, 23:23 by perrenc
+ *
+ * Purposefully used for making and correcting errors
+ */
+
+#include <stdio.h>
+
+int main(int argc, char **argv) {
+
+	/*creates the user input and incrementing variables*/
+	int i;
+	int loop;
+	
+	system("clear");
+	printf("Enter an integer between 1 and 20:\n");
+	scanf("%d", &i);
+
+	/*errors and exits if i is greater than 20 or less than one*/
+	if((1 > i) | (i > 20)){
+		printf("You have entered an incorrect value.\n");
+		return(-1);
+	}
+	/*prints ascending characters from one up to the user entered value*/
+	for (loop = 1; (loop <= i); ++loop){
+		printf("%d ", loop);
+	}
+
+	printf("\n");
+
+	/*prints descending characters from the user entered value down to 1*/
+	for(loop = i; ((loop <= i) & (loop != 0)); loop--){
+		printf("%d ", loop);
+	}
+	printf("\n");
+}
+
+/*error listings
+ * Removed semicolon at line 23: "expected ; before return"
+ * Commented out variable i on line 14: "i undeclared (first use in this function.
+		Each undeclared identifier is reported only once for each function it appears in."
+ * Removed braces from the following if function: "expected } before else"
+
+int extra() {
+	if(x < 3) {
+		printf("x is less than 3.\n");
+		printf("you fart loudly.");
+	else
+		printf("x is not less than 3.\n");
+		printf("et cetera\n");
+}
+}
+ * Removed parentheses from line 27: "expected ( before loop
+									  expected ; before { token"
+ * Passed wrong type to line 28: It compiled, but output was empty.
+ */

OSU Coursework/CS 161 - Intro to Programming I/Labs/Lab 5/flush.c

@@ -0,0 +1,47 @@
+/*
+ * Original Author: Corwin A. Perren (perrenc)
+ * File: flush.c
+ * Created: 2012 February 16, 03:11 by perrenc
+ * Last Modified: 2012 February 16, 03:11 by perrenc
+ * 
+ * Has the user input some text, prints out the first character entered along with its
+ * ascii code and then reruns until it receives a "%" character.
+ *
+ */
+ 
+#include <stdio.h>
+
+/* ------Begin Functions------ */
+
+/*Has the user input text, uses getchar to store the first character, then loops through
+ * getchar until the buffer is clear when it receives a "\n". */
+char getchar_and_flush(){
+	char foo; //Used for temp user input storage
+	int loop; //Used for looping to clear the buffer
+
+	printf("Please enter some text. Press enter to finish. To quit, type a \"%\" symbol. ");
+	foo = getchar ();
+	loop = foo;
+	while(loop != '\n'){
+		loop = getchar ();
+	}	
+	return foo;
+}
+
+
+/* ------End Functions------ */
+
+/* Initalizes foo, clears the screen, then calls getchar_and_flush until the return 
+ * character is "%" */
+int main(int argc, char **argv){
+
+	char foo; //Used to check the return value of getchar_and_flush for looping
+
+	system("clear");
+
+	while(foo != '%'){
+		foo = getchar_and_flush();
+		printf("\nThe first character was %c or %d in ASCII.\n\n", foo, foo);
+	}
+	return 0;
+}

OSU Coursework/CS 161 - Intro to Programming I/Labs/Lab 5/lab5.c

@@ -0,0 +1,125 @@
+/*
+ * Original Author: Corwin A. Perren (perrenc)
+ * File: lab5.c
+ * Created: 2012 February 16, 00:22 by perrenc
+ * Last Modified: 2012 February 16, 00:22 by perrenc
+ * 
+ * This program asks the user for two values, counts up to it from zero, down to zero 
+ * from it, and bewteen the two values. It then asks whether the user would like to 
+ * run the program again.
+ */
+ 
+#include <stdio.h>
+
+/* ------Begin Functions------ */
+
+/* Begin user input functions */
+
+/* Asks the user for a positive integer and returns it */
+int userinput1(void){
+	int a; // For temp user input storage
+	system("clear");
+	printf("Please enter your first positive integer: ");
+	scanf("%d", &a);
+	return a;
+}	
+
+/* Asks the user for another positive integer and returns it */
+int userinput2(void){
+	int a; // For temp user input storage
+	printf("Please enter your second positive integer: ");
+	scanf("%d", &a);
+	return a;
+}	
+
+/* End user input functions */
+
+/* Begin Math Functions */
+
+/* Receives the first integer from the user and counts up from 0 to it with integers */
+int count_up(int userin1){
+	int loop; //Used for loop incrementing
+	for(loop = 0 ; loop <= userin1 ; loop++){
+		printf("%d ", loop);
+	}
+	printf("\n");
+}	
+
+/* Counts down to zero by integers from the first integer entered by the user */
+int count_down(int userin1){
+	int loop; //Used for loop incrementing
+	for(loop = userin1 ; loop >= 0 ; loop--){
+		printf("%d ", loop);
+	}
+	printf("\n");
+}
+
+/* Counts from the smaller number up to the larger one based on those entered by 
+ * the user */
+int count_between_up(int userin1, int userin2){
+	int loop; //Used for loop incrementing
+	for(loop = userin1 ; loop <= userin2 ; loop++){
+		printf("%d ", loop);
+	}
+	printf("\n");
+}
+
+/* Counts down from the larger number to the smaller one from those entered by the user */
+int count_between_down(int userin1, int userin2){
+	int loop; //Used for loop incrementing
+	for(loop = userin1 ; loop >= userin2 ; loop--){
+		printf("%d ", loop);
+	}
+	printf("\n");
+}
+
+/* End Math Functions */
+
+/* Begin Generic Functions */
+
+/* Assigns the user inputs to variables, counts up, then down, then counts up or down
+ * between the two entered number depending on which of the two is larger */
+void task1(void){
+	
+	int userin1 = userinput1 ();
+	int userin2 = userinput2 ();
+
+	count_up (userin1);
+	count_down (userin1);
+
+	if (userin1 < userin2){
+		count_between_up (userin1, userin2);
+	}else if (userin1 > userin2){
+		count_between_down (userin1, userin2);
+	}		
+}
+
+/* Used for quitting or rerunning the program per user request */
+int quittask1(void){
+	
+	int endtask1;
+
+	printf("\nWould you like to run again? Type 0 for no or 1 for yes: ");
+	scanf("%d", &endtask1);
+
+	return endtask1;
+}	
+	
+/* ------End Functions------ */
+
+/* Runs task 1 from above and determines whether the program should exit or rerun based
+ * on the return value from quittask1. To rerun, a goto is used since I could not get 
+ * loops to work. */
+int main(int argc, char **argv){
+
+	begintask1: ;
+	task1 ();
+	int endtask1 = quittask1 ();
+	if(endtask1 == 0){
+		//Break
+	}else if(endtask1 == 1){
+		goto begintask1;
+	}	
+
+	return 0;
+}