C
Most of my programming projects in C have been completed as class assignments so far. However, I'm always on the lookout for opportunities to pursue independent projects and expand my skill set. As I continue to develop my knowledge and experience with C programming, I hope to work on more personal projects in the future. If you're interested in reviewing my C code, please don't hesitate to ask. You can easily copy and paste my code into any IDE of your choice
Password Modifier: a program that takes a simple password and makes it stronger by replacing characters
i becomes 1
a becomes @
m becomes M
B becomes 8
s becomes $
#include <stdio.h>
#include <string.h>
int main()
{
char string[50];
scanf("%s",string);
char ch1 = '1';
char ch2 = '@';
char ch3 = 'M';
char ch4 = '8';
char ch5 = '$';
char *end;
end = "!";
for(int i = 0; i < strlen(string); i++){
if(string[i] == 'i')
string[i] = ch1;
else if(string[i] == 'a')
string[i] = ch2;
else if(string[i] == 'm')
string[i] = ch3;
else if(string[i] == 'B')
string[i] = ch4;
else if(string[i] == 's')
string[i] = ch5;
}
strcat(string,end);
printf("%s\n", string);
return 0;
}
Toll Calculation: Toll roads have different fees based on the time of day and on weekends. A function CalcToll() has three parameters: the current hour of time (int), whether the time is morning (boolean), and whether the day is a weekend (boolean).
Weekday Tolls
Before 7:00 am ($1.15)
7:00 am to 9:59 am ($2.95)
10:00 am to 2:59 pm ($1.90)
3:00 pm to 7:59 pm ($3.95)
Starting 8:00 pm ($1.40)
Weekend Tolls
Before 7:00 am ($1.05)
7:00 am to 7:59 pm ($2.15)
Starting 8:00 pm ($1.10)
#include <stdio.h>
#include <stdbool.h>
double CalcToll(int hour, bool isMorning, bool isWeekend) {
if(isWeekend){
if(isMorning){
if(hour<7){
return 1.05;
}
else{
return 2.15;
}
}
else{
if(hour<8){
return 2.15;
}
else{
return 1.10;
}
}
}
else{
if(isMorning){
if(hour<7){
return 1.15;
}
else if(hour<10){
return 2.95;
}
else{
return 1.90;
}
}
else{
if(hour<3){
return 1.90;
}
else if(hour<8){
return 3.95;
}
else{
return 1.40;
}
}
}
/* Type your code here. */
}
int main(void) {
printf("%.2lf\n", CalcToll(8, true, false));
printf("%.2lf\n", CalcToll(1, false, false));
printf("%.2lf\n", CalcToll(3, false, true));
printf("%.2lf\n", CalcToll(5, true, true));
return 0;
}
Rock Paper Scissors: A program to play an automated game of Rock, Paper, Scissors.
#include <stdlib.h>
#include <stdio.h>
int main() {
const int ROCK = 0;
const int PAPER = 1;
const int SCISSORS = 2;
const int MAX_NAME = 40;
int seed;
scanf("%d", &seed);
srand(seed);
char player1_name[MAX_NAME];
char player2_name[MAX_NAME];
int rounds;
scanf("%s", player1_name);
scanf("%s", player2_name);
while (1) {
scanf("%d", &rounds);
if (rounds > 0) {
break;
}
else {
printf("Rounds must be > 0\n");
}
}
printf("%s vs %s for %d rounds\n", player1_name, player2_name, rounds);
int player1_move, player1_wins = 0;
int player2_move, player2_wins = 0;
for (int i = 0; i < rounds; ++i) {
while (1) {
player1_move = rand() % 3;
player2_move = rand() % 3;
if (player1_move != player2_move) {
break;
}
printf("Tie\n");
}
if (player1_move == ROCK) {
if (player2_move == PAPER) {
printf("%s wins with paper\n", player2_name);
++player2_wins;
}
else if (player2_move == SCISSORS) {
printf("%s wins with rock\n", player1_name);
++player1_wins;
}
}
else if (player1_move == PAPER) {
if (player2_move == SCISSORS) {
printf("%s wins with scissors\n", player2_name);
++player2_wins;
}
else if (player2_move == ROCK) {
printf("%s wins with paper\n", player1_name);
++player1_wins;
}
}
else if (player1_move == SCISSORS) {
if (player2_move == ROCK) {
printf("%s wins with rock\n", player2_name);
++player2_wins;
}
else if (player2_move == PAPER) {
printf("%s wins with scissors\n", player1_name);
++player1_wins;
}
}
}
printf("%s wins %d and %s wins %d\n", player1_name, player1_wins, player2_name, player2_wins);
return 0;
}
Binary Search Algorithm: search for users number
#include <stdio.h>
void GuessNumber(int lowVal, int highVal) {
int midVal; // Midpoint of low and high value
char userAnswer; // User response
midVal = (highVal + lowVal) / 2;
// Prompt user for input
printf("Is it %d? (l/h/y): ",midVal);
scanf(" %c", &userAnswer);
if( (userAnswer != 'l') && (userAnswer != 'h') ) { // Base case: Found number
printf("Thank you!\n");
}
else { // Recursive case: split into lower OR upper half
if (userAnswer == 'l') { // Guess in lower half
GuessNumber(lowVal, midVal); // Recursive call
}
else { // Guess in upper half
GuessNumber(midVal + 1, highVal); // Recursive call
}
}
}
int main(void) {
// Print game objective, user input commands
printf("Choose a number from 0 to 100.\n");
printf("Answer with:\n");
printf(" l (your num is lower)\n");
printf(" h (your num is higher)\n");
printf(" any other key (guess is right).\n");
// Call recursive function to guess number
GuessNumber(0, 100);
return 0;
}
Programmable Gloves: Makes different sounds using flex sensors and piezobuzzer ( PIC 16F1829)
// PIC16F1829 Configuration Bit Settings VERSION 3 MOST CURRENT
// 'C' source line config statements
// CONFIG1
#pragma config FOSC = INTOSC // Oscillator Selection (INTOSC oscillator: I/O function on CLKIN pin)
#pragma config WDTE = OFF // Watchdog Timer Enable (WDT disabled)
#pragma config PWRTE = OFF // Power-up Timer Enable (PWRT disabled)
#pragma config MCLRE = ON // MCLR Pin Function Select (MCLR/VPP pin function is MCLR)
#pragma config CP = OFF // Flash Program Memory Code Protection (Program memory code protection is disabled)
#pragma config CPD = OFF // Data Memory Code Protection (Data memory code protection is disabled)
#pragma config BOREN = OFF // Brown-out Reset Enable (Brown-out Reset disabled)
#pragma config CLKOUTEN = OFF // Clock Out Enable (CLKOUT function is disabled. I/O or oscillator function on the CLKOUT pin)
#pragma config IESO = OFF // Internal/External Switchover (Internal/External Switchover mode is disabled)
#pragma config FCMEN = OFF // Fail-Safe Clock Monitor Enable (Fail-Safe Clock Monitor is disabled)
// CONFIG2
#pragma config WRT = OFF // Flash Memory Self-Write Protection (Write protection off)
#pragma config PLLEN = OFF // PLL Enable (4x PLL disabled)
#pragma config STVREN = ON // Stack Overflow/Underflow Reset Enable (Stack Overflow or Underflow will cause a Reset)
#pragma config BORV = LO // Brown-out Reset Voltage Selection (Brown-out Reset Voltage (Vbor), low trip point selected.)
#pragma config LVP = ON // Low-Voltage Programming Enable (Low-voltage programming enabled)
/*Serial Configuration*/
#define BAUD 9600 // Bits per second transfer rate
#define FOSC 4000000L // Frequency Oscillator
#define DIVIDER ((int)(FOSC / (16UL * BAUD) - 1)) // Should be 25 for 9600/4MhZ
#define NINE_BITS 0
#define SPEED 0x4 // T Speed
#define RX_PIN TRISC5 // Recieve Pin
#define TX_PIN TRISC4 // Transmit Pin
#include <xc.h>
#include <stdio.h>
#include <stdlib.h>
#define _XTAL_FREQ 4000000.0
const int note_delay = 1000000 / 523 / 2;
const int duration_delay = 320;
void usartConfig(void);
unsigned char getche(void);
unsigned char getch();
void putch(unsigned char byte);
void setup_comms(void);
void play_a_chord_tone();
void play_b_chord_tone();
void play_c_chord_tone();
void play_d_chord_tone();
void play_e_chord_tone();
void play_f_chord_tone();
void play_g_chord_tone();
void play_dash();
void play_dot();
void play_piano_chord();
void play_happy_birthday();
void play_star_wars();
void play_siren_tone();
void initialize_adc()
{
// Configure ADC
ADCON1bits.ADPREF = 0b00; // VDD is the reference voltage
ADCON1bits.ADCS = 0b101; // FOSC/16 is the conversion clock
// Configure ADC
TRISCbits.TRISC2 = 1; // Set RC2 as input
TRISCbits.TRISC3 = 1; // Set RC3 as input
TRISBbits.TRISB5 = 1; // Set RB4 as input
TRISCbits.TRISC1 = 1; // Set RB5 as input
ANSELCbits.ANSC2 = 1; // Set RC2 as analog input
ANSELCbits.ANSC3 = 1; // Set RC3 as analog input
ANSELBbits.ANSB5 = 1; // Set RB4 as analog input
ANSELCbits.ANSC1 = 1; // Set RB5 as analog input
}
unsigned int read_adc(unsigned char channel)
{
// Start ADC conversion
ADCON0bits.ADON = 1; // Enable ADC module
ADCON0bits.CHS = channel; // Set input channel
__delay_us(5); // Wait for acquisition time
ADCON0bits.GO = 1; // Start conversion
// Wait for the conversion to complete
while (ADCON0bits.GO)
;
// Read the result
unsigned int adc_value = ADRES;
// Disable ADC module
ADCON0bits.ADON = 0;
return adc_value;
}
void main(void)
{
// Configure oscillator frequency
OSCCON = 0x6A;
// Configure I/O ports
TRISA = 0x00; // Set RA2 and RA5 as outputs, and RA4 as input
PORTA = 0x00; // Turn off RA2 and RA5
TRISC = 0x00;
PORTC = 0x00;
TRISB = 0x80; // Set RB7 as input
ANSELB = 0x00; // Disable analog input on port B
setup_comms();
usartConfig();
printf("test\n\r");
// Configure ADC
TRISCbits.TRISC2 = 1; // Set RC2 as input
TRISCbits.TRISC3 = 1; // Set RC3 as input
TRISBbits.TRISB5 = 1; // Set RB4 as input
TRISCbits.TRISC1 = 1; // Set RC1 as input
TRISAbits.TRISA2 = 0;
ANSELCbits.ANSC2 = 1; // Set RC2 as analog input
ANSELCbits.ANSC3 = 1; // Set RC3 as analog input
ANSELBbits.ANSB5 = 1; // Set RB4 as analog input
ANSELCbits.ANSC1 = 1; // Set RC1 as analog input
initialize_adc(); // Initialize ADC
int beats = 0;
int diffKey = 0;
int morse = 1;
int signal = 0;
TRISAbits.TRISA2 = 0;
PORTAbits.RA2 = 0;
RA5 = 1;
RC6 = 1;
while (beats)
{
// Read ADC value for AN6 (RC2)
unsigned int adc_value_6 = read_adc(6); // rc2
unsigned int adc_value_7 = read_adc(7); // rc3
unsigned int adc_value_11 = read_adc(11); // rb5
unsigned int adc_value_13 = read_adc(13); // rc1
// Check if threshold for blue light is passed
if (adc_value_6 != 0xffc0)
{
RA5 = 1; // Turn on RA2 (blue light)
}
else
{
RA5 = 0; // Turn off RA2
play_c_chord_tone(); // Play C chord tone
printf("C chord \n\r");
}
if (adc_value_7 != 0xffc0)
{
RA2 = 1; // Turn on RA5 (green light)
}
else
{
RA2 = 0; // Turn off RA5
play_d_chord_tone();
printf("D chord \n\r");
}
if (adc_value_11 != 0xffc0)
{
RC6 = 1; // Turn on RA5 (green light)
}
else
{
RC6 = 0; // Turn off RA5
play_e_chord_tone();
printf("E chord \n\r");
}
if (adc_value_13 != 0xffc0)
{
RA5 = 1; // Turn on RA5 (green light)
}
else
{
RA5 = 0; // Turn off RA5
play_g_chord_tone();
play_f_chord_tone();
printf("GF chord \n\r");
}
// // Check if threshold for red light is passed
// if (PORTAbits.RA4 == 0 && adc_value_6 > 1023 && adc_value_7 > 1023) {
// RC6 = 1; // Turn on RC6 (red light)
// } else {
// RC6 = 1; // Turn off RC6
// }
__delay_ms(100); // Delay for stability
}
while (diffKey)
{
// Read ADC value for AN6 (RC2)
unsigned int adc_value_6 = read_adc(6);
unsigned int adc_value_7 = read_adc(7);
unsigned int adc_value_11 = read_adc(11);
unsigned int adc_value_13 = read_adc(13);
// Check if threshold for blue light is passed
if (adc_value_6 == 0xffc0)
{
RA5 = 1; // Turn on RA2 (blue light)
}
else
{
RA5 = 0; // Turn off RA2
play_a_chord_tone(); // Play C chord tone
printf("C chord \n\r");
}
if (adc_value_7 == 0xffc0)
{
RA2 = 0; // Turn on RA5 (green light)
}
else
{
RA2 = 1; // Turn off RA5
play_b_chord_tone();
printf("D chord \n\r");
}
if (adc_value_11 == 0xffc0)
{
RC6 = 1; // Turn on RA5 (green light)
}
else
{
RC6 = 0; // Turn off RA5
play_c_chord_tone();
printf("E chord \n\r");
}
// if (adc_value_13 != 0xffc0) // Background Beat
// {
// RA5 = 1; // Turn on RA5 (green light)
// }
// else
// {
// RA5 = 0; // Turn off RA5
// play_g_chord_tone();
// printf("G chord \n\r");
// }
__delay_ms(100); // Delay for stability
}
int dot_played = 0; // Flag variable to keep track of whether a dot has been played
int dash_played = 0; // Flag variable to keep track of whether a dash has been played
while (morse)
{
// Read ADC value for AN6 (RC2) and AN1
unsigned int adc_value_6 = read_adc(6);
unsigned int adc_value_7 = read_adc(7);
unsigned int adc_value_11 = read_adc(11);
if (adc_value_6 != 0xffc0)
{
RA2 = 1; // Turn on RA2 (blue light)
dot_played = 0; // Reset the dot played flag
}
else if (!dot_played)
{
RA2 = 0; // Turn off RA2
play_dot(); // Play dot
printf("-");
dot_played = 1; // Set the dot played flag
}
if (adc_value_7 != 0xffc0)
{
RA5 = 1; // Turn on RA5 (green light)
dash_played = 0; // Reset the dash played flag
}
else if (!dash_played)
{
RA5 = 0; // Turn off RA5
play_b_chord_tone(); // Play dash
printf(".");
dash_played = 1; // Set the dash played flag
}
if (adc_value_11 != 0xffc0)
{
printf("\n\r");
}
__delay_ms(100); // Delay for stability
}
while (signal)
{ // yes or no signals, only green and red
// Read ADC value for AN6 (RC2) and AN1
unsigned int adc_value_6 = read_adc(6);
unsigned int adc_value_7 = read_adc(7);
unsigned int adc_value_11 = read_adc(11);
if (adc_value_6 == 0xffc0)
{
RA5 = 1; // Turn on RA2 (blue light)
}
else
{
RA5 = 0; // Turn off RA2
play_c_chord_tone(); // Play C chord tone
printf("C chord \n\r");
}
if (adc_value_7 == 0xffc0)
{
RC6 = 0; // Turn on RA5 (green light)
}
else
{
RC6 = 1; // Turn off RA5
play_e_chord_tone();
printf("D chord \n\r");
}
if (adc_value_11 == 0xffc0)
{
RA2 = 1; // Turn on RA5 (green light)
dash_played = 0; // Reset the dash played flag
}
else
{
RA2 = 0; // Turn off RA5 RED
play_siren_tone();
printf("HELP:::::: EMERGENCY \n\r");
}
}
__delay_ms(100); // Delay for stability
}
void play_a_chord_tone()
{
int i;
for (i = 0; i < 100; i++)
{
PORTAbits.RA4 = 1; // Turn on RA4 (buzzer)
__delay_us(2272); // Delay for tone frequency
PORTAbits.RA4 = 0; // Turn off RA4 (buzzer)
__delay_us(2272); // Delay for tone frequency
}
__delay_ms(50); // Delay for tone separation
}
void play_b_chord_tone()
{
int i;
for (i = 0; i < 100; i++)
{
PORTAbits.RA4 = 1; // Turn on RA4 (buzzer)
__delay_us(2024); // Delay for tone frequency
PORTAbits.RA4 = 0; // Turn off RA4 (buzzer)
__delay_us(2024); // Delay for tone frequency
}
__delay_ms(50); // Delay for tone separation
}
void play_c_chord_tone()
{
int i;
for (i = 0; i < 200; i++)
{
PORTAbits.RA4 = 1; // Turn on RA4 (buzzer)
__delay_us(261.63); // Delay for tone frequency
PORTAbits.RA4 = 0; // Turn off RA4 (buzzer)
__delay_us(261.63); // Delay for tone frequency 1911 for deeper longer
}
__delay_ms(50); // Delay for tone separation
}
void play_d_chord_tone()
{
int i;
for (i = 0; i < 200; i++)
{
PORTAbits.RA4 = 1; // Turn on RA4 (buzzer)
__delay_us(293.7); // Delay for tone frequency
PORTAbits.RA4 = 0; // Turn off RA4 (buzzer)
__delay_us(293.7); // Delay for tone frequency
}
__delay_ms(50); // Delay for tone separation
}
void play_e_chord_tone()
{
int i;
for (i = 0; i < 200; i++)
{
PORTAbits.RA4 = 1; // Turn on RA4 (buzzer)
__delay_us(329.6); // Delay for tone frequency
PORTAbits.RA4 = 0; // Turn off RA4 (buzzer)
__delay_us(329.6); // Delay for tone frequency
}
__delay_ms(50); // Delay for tone separation
}
void play_f_chord_tone()
{
int i;
for (i = 0; i < 200; i++)
{
PORTAbits.RA4 = 1; // Turn on RA4 (buzzer)
__delay_us(349.2); // Delay for tone frequency
PORTAbits.RA4 = 0; // Turn off RA4 (buzzer)
__delay_us(349.2); // Delay for tone frequency
}
__delay_ms(50); // Delay for tone separation
}
void play_g_chord_tone()
{
int i;
for (i = 0; i < 200; i++)
{ // Play for about 1 second
PORTAbits.RA4 = 1; // Turn on RA4 (buzzer)
__delay_us(392); // Delay for tone frequency
PORTAbits.RA4 = 0; // Turn off RA4 (buzzer)
__delay_us(392); // Delay for tone frequency
}
__delay_ms(50); // Delay for tone separation
}
void play_dot()
{
int i;
for (i = 0; i < 1; i++)
{
PORTAbits.RA4 = 1; // Turn on RA4 (buzzer)
__delay_ms(100); // Delay for tone frequency
PORTAbits.RA4 = 0; // Turn off RA4 (buzzer)
__delay_ms(100); // Delay for tone frequency
}
__delay_ms(50); // Delay for tone separation
}
void play_dash()
{
int i;
for (i = 0; i < 1; i++)
{
PORTAbits.RA4 = 1; // Turn on RA4 (buzzer)
__delay_ms(20); // Delay for tone frequency
PORTAbits.RA4 = 0; // Turn off RA4 (buzzer)
__delay_ms(20); // Delay for tone frequency
}
__delay_ms(50); // Delay for tone separation
}
void play_siren_tone() {
int i;
for (i = 0; i < 500; i++) {
PORTAbits.RA4 = 1; // Turn on RA4 (buzzer)
__delay_us(500); // Delay for tone frequency
PORTAbits.RA4 = 0; // Turn off RA4 (buzzer)
__delay_us(500); // Delay for tone frequency
}
for (i = 0; i < 500; i++) {
PORTAbits.RA4 = 1; // Turn on RA4 (buzzer)
__delay_us(100); // Delay for tone frequency
PORTAbits.RA4 = 0; // Turn off RA4 (buzzer)
__delay_us(100); // Delay for tone frequency
}
__delay_ms(50); // Delay for tone separation
}
void usartConfig(void)
{
APFCON0 = 0x84; // This sets pins RC5 and RC4 as RX & TX on pic16f1829
TXCKSEL = 1;
RXDTSEL = 1; // makes RC4 & 5 TX & RX for USART (Allows ICSP)
}
void setup_comms(void)
{
RX_PIN = 1;
TX_PIN = 1;
SPBRG = DIVIDER;
RCSTA = (NINE_BITS | 0x90);
TXSTA = (SPEED | NINE_BITS | 0x20);
TXEN = 1;
SYNC = 0;
SPEN = 1;
BRGH = 1;
}
void putch(unsigned char byte)
{
/* output one byte */
while (!TXIF) /* set when register is empty */
continue;
TXREG = byte;
}
unsigned char getch()
{
/* retrieve one byte */
while (!RCIF) /* set when register is not empty */
continue;
return RCREG;
}
unsigned char getche(void)
{
unsigned char c;
putch(c = getch());
return c;
}
