嘿，我对 C 很陌生，我的代码遇到了问题
#include <stdio.h>
#include <windows.h>
#include <string.h>
#include <time.h>
#include <ctype.h>
#include <conio.h>
#define ENTER 13
#define BCKSPC 8
#define MAX_TASKS 100
#define CREATE_ACCOUNT 2
#define SIGN_IN 1
#define CHANGE_PASSWORD 3
#define EXIT 4
struct user {
char username[100];
char password[100];
};
struct task {
char name[100];
char notes[100];
int day;
int month;
int year;
};
void displayTasks(struct task tasks[MAX_TASKS], int numTasks, int selectedDate, int selectedMonth, int selectedYear);
void editTask(struct task *task, struct task tasks[MAX_TASKS], int *numTasks);
void deleteTask(struct task tasks[MAX_TASKS], int *numTasks, int selectedDate, int selectedMonth, int selectedYear);
void saveTasks(struct task tasks[MAX_TASKS], int numTasks);
void signIn(struct task tasks[MAX_TASKS], int *numTasks);
void loadTasks(struct task tasks[MAX_TASKS], int *numTasks);
void setConsoleColor(int color);
void clearConsoleScreen();
void clearInputBuffer();
void takeInput(char ch[100]);
int getch();
void takePassword(char *str);
void displayMenu();
int getMenuChoice();
int passwordStrength(const char *password);
const char *getMonthName(int month);
void displayCalendar(int month, int year, struct task tasks[MAX_TASKS], int numTasks, int selectedDay, int selectedMonth, int selectedYear);
void createAccount();
void changePassword();
void setConsoleColor(int color) {
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), color);
}
void clearConsoleScreen() {
COORD coord = {0, 0};
DWORD written;
FillConsoleOutputCharacter(GetStdHandle(STD_OUTPUT_HANDLE), ' ', 100 * 100, coord, &written);
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);
}
void clearInputBuffer() {
int c;
while ((c = getchar()) != '\n' && c != EOF){
}
}
void takeInput(char ch[100]) {
fgets(ch, 100, stdin);
size_t len = strlen(ch);
if (len > 0 && ch[len - 1] == '\n') {
ch[len - 1] = '\0';
} else {
int c;
while ((c = getchar()) != '\n' && c != EOF);
}
}
int getch() {
int ch = _getch();
if (ch == 0 || ch == 0xE0) {
_getch();
}
return ch;
}
void takePassword(char *str) {
int i = 0;
str[0] = '\0';
do {
int ch = getch();
if (ch == ENTER) {
str[i] = '\0';
break;
} else if (ch == BCKSPC) {
if (i > 0) {
i--;
printf("\b \b");
}
} else if (ch == 0 || ch == 0xE0) {
getch();
} else {
str[i] = (char)ch;
printf("*");
i++;
}
} while (1);
fflush(stdin);
}
void displayMenu() {
setConsoleColor(14);
printf("\n\t\t\t\t------Hello, Welcome to your personalized Schedule App!------\n");
setConsoleColor(15);
setConsoleColor(14);
printf("Input 1 to Sign In\n");
setConsoleColor(15);
setConsoleColor(14);
printf("Input 2 to Create Account\n");
setConsoleColor(15);
setConsoleColor(14);
printf("Input 3 to Change Password\n");
setConsoleColor(15);
setConsoleColor(14);
printf("Input 4 to Exit\n");
setConsoleColor(15);
}
int getMenuChoice() {
int choice;
while (1) {
setConsoleColor(14);
printf("Enter your choice (1-4): ");
setConsoleColor(15);
if (scanf("%d", &choice) == 1 && choice >= 1 && choice <= 4) {
clearInputBuffer();
return choice;
} else {
clearInputBuffer();
setConsoleColor(14);
printf("Invalid choice. Please enter a number between 1 and 4.\n");
setConsoleColor(15);
}
}
}
int passwordStrength(const char *password);
void createAccount() {
struct user user = {0};
setConsoleColor(14);
printf("Enter your username: ");
setConsoleColor(15);
takeInput(user.username);
do {
setConsoleColor(14);
printf("Enter your password: ");
setConsoleColor(15);
takePassword(user.password);
setConsoleColor(14);
printf("\nConfirm your password: ");
setConsoleColor(15);
char confirmPassword[100];
takePassword(confirmPassword);
if (strcmp(user.password, confirmPassword) != 0) {
setConsoleColor(14);
printf("\nPasswords do not match. Please try again.\n");
setConsoleColor(15);
}else if (!passwordStrength(user.password)){
setConsoleColor(14);
printf("\nPassword is too weak. Choose a stronger password\n");
setConsoleColor(15);
}else{
break;
}
}while (1);
FILE *fp = fopen("Users.dat", "ab+");
if (fp == NULL){
perror("Error in opening file");
return;
}
fseek(fp, 0, SEEK_END);
int writeResult = fwrite(&user, sizeof(struct user), 1, fp);
fclose(fp);
if (writeResult != 0){
setConsoleColor(14);
printf("\nRegistration successful, Your username is %s\n", user.username);
setConsoleColor(15);
}else{
setConsoleColor(14);
printf("\nSomething went wrong");
setConsoleColor(15);
}
setConsoleColor(14);
printf("\nPress Enter to continue...");
setConsoleColor(15);
while (getchar() != '\n');
system("cls");
}
int passwordStrength(const char *password){
int length = strlen(password);
int hasLetter = 0;
int hasDigit = 0;
for (int i=0;i < length; i++){
if(isalpha(password[i])){
hasLetter = 1;
} else if (isdigit(password[i])){
hasDigit = 1;
}
}
if (length >= 6 && (hasLetter || hasDigit )){
return 1;
} else {
return 0;
}
}
const char *getMonthName(int month) {
setConsoleColor(14);
static const char *monthNames[] = {"", "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};
setConsoleColor(15);
return monthNames[month];
}
void displayCalendar(int month, int year, struct task tasks[MAX_TASKS], int numTasks, int selectedDay, int selectedMonth, int selectedYear) {
system("cls");
setConsoleColor(14);
printf("\n\n\t\t\t\t\t \x1b[33m%s %d\x1b[0m\n", getMonthName(month), year);
setConsoleColor(15);
setConsoleColor(14);
printf(" +-------------------------------+\n");
setConsoleColor(15);
setConsoleColor(14);
printf(" Sun Mon Tue Wed Thu Fri Sat\n");
setConsoleColor(15);
setConsoleColor(14);
printf(" +-------------------------------+\n");
setConsoleColor(15);
struct tm firstDay = {0};
firstDay.tm_year = year - 1900;
firstDay.tm_mon = month - 1;
firstDay.tm_mday = 1;
mktime(&firstDay);
int dayOfWeek = firstDay.tm_wday;
int daysInMonth;
if (month == 2) {
if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))
daysInMonth = 29;
else
daysInMonth = 28;
} else if (month == 4 || month == 6 || month == 9 || month == 11) {
daysInMonth = 30;
} else {
daysInMonth = 31;
}
int day = 1;
for (int i = 0; i < 6; i++) {
for (int j = 0; j < 7; j++) {
if (i == 0 && j < dayOfWeek) {
printf(" ");
} else if (day <= daysInMonth) {
int taskFound = 0;
for (int k = 0; k < numTasks; k++) {
if (tasks[k].day == day && tasks[k].month == month) {
taskFound = 1;
break;
}
}
int isSelected = (selectedDay == day && selectedMonth == month && selectedYear == year);
if (isSelected) {
printf("\x1b[32m");
} else if (taskFound) {
printf("\x1b[31m");
}
printf(" %3d ", day);
if (isSelected || taskFound) {
printf("\x1b[0m");
}
day++;
}
}
printf("\n");
}
setConsoleColor(14);
printf(" +-------------------------------+\n");
setConsoleColor(15);
setConsoleColor(14);
printf("\nSelect the date to see your tasks (enter 0 to go back): ");
setConsoleColor(15);
int selectedDate;
scanf("%d", &selectedDate);
int goBack = 0;
if (selectedDate == 0) {
goBack = 1;
} else {
system("cls");
displayTasks(tasks, numTasks, selectedDate, month, year);
}
if (goBack) {
return;
}
displayTasks(tasks, numTasks, selectedDate, month, year);
}
void displayTasks(struct task tasks[MAX_TASKS], int numTasks, int selectedDate, int selectedMonth, int selectedYear) {
int goBack = 0;
do {
system("cls");
setConsoleColor(14);
printf("\n\t\t\t\t-----Your Tasks and Notes-----\n");
setConsoleColor(15);
if (selectedDate != 0 && selectedMonth != 0) {
printf("\x1b[33m");
printf("Date: %d %s %d\n", selectedDate, getMonthName(selectedMonth), selectedYear);
printf("\x1b[0m");
}
int tasksFound = 0;
for (int i = 0; i < numTasks; i++) {
if (tasks[i].day == selectedDate && tasks[i].month == selectedMonth && tasks[i].year == selectedYear) {
tasksFound = 1;
setConsoleColor(14);
printf("----------------------------------\n");
setConsoleColor(15);
setConsoleColor(14);
printf("Task: %s\n", tasks[i].name);
setConsoleColor(15);
setConsoleColor(14);
printf("Notes: %s\n", tasks[i].notes);
setConsoleColor(15);
setConsoleColor(14);
printf("----------------------------------\n");
setConsoleColor(15);
setConsoleColor(14);
printf("Options:\n");
printf("1. Edit Task\n");
printf("2. Delete Task\n");
printf("3. Go back\n");
setConsoleColor(15);
int option;
setConsoleColor(14);
printf("Enter your choice: ");
setConsoleColor(15);
scanf("%d", &option);
while (getchar() != '\n');
switch (option) {
case 1:
editTask(&tasks[i], tasks, &numTasks);
break;
case 2:
deleteTask(tasks, &numTasks, tasks[i].day, tasks[i].month, tasks[i].year);
break;
case 3:
goBack = 1;
break;
default:
setConsoleColor(14);
printf("Invalid option. Press Enter to continue..\n");
setConsoleColor(15);
getch();
}
if (goBack){
break;
}
}
}
if (!tasksFound) {
setConsoleColor(14);
printf("\x1b[31mNo tasks found for %d %s %d\x1b[0m \n", selectedDate, getMonthName(selectedMonth), selectedYear);
setConsoleColor(15);
setConsoleColor(14);
printf("\nPress Enter to continue...");
setConsoleColor(15);
int enterKey;
while ((enterKey = getchar()) != '\n' && enterKey != EOF);
goBack = 1;
} else {
setConsoleColor(14);
printf("\nPress Enter to go back...");
setConsoleColor(15);
int enterKey;
while ((enterKey = getchar()) != '\n' && enterKey != EOF);
}
}while (goBack == 0);
}
void editTask(struct task *task, struct task tasks[MAX_TASKS], int *numTasks){
if (*numTasks == 0) {
setConsoleColor(14);
printf("\nNo tasks available to edit.");
setConsoleColor(15);
return;
}
int taskIndex;
setConsoleColor(14);
printf("\nEnter the index of the task to edit (1-%d): ", numTasks);
setConsoleColor(15);
scanf("%d", &taskIndex);
if (taskIndex < 1 || taskIndex > *numTasks) {
setConsoleColor(14);
printf("\nInvalid index. Press Enter to go back...");
setConsoleColor(15);
while (getchar() != '\n');
return;
}
taskIndex--;
setConsoleColor(14);
printf("\nEditing Task:\n");
setConsoleColor(15);
printf("Task Name: %s\n", tasks[taskIndex].name);
printf("Notes: %s\n", tasks[taskIndex].notes);
printf("Date: %d %s %d\n", tasks[taskIndex].day, getMonthName(tasks[taskIndex].month), tasks[taskIndex].year);
setConsoleColor(14);
printf("\nDo you want to edit this task? (1: Yes, 0: No): ");
setConsoleColor(15);
int confirmation;
scanf("%d", &confirmation);
if (confirmation) {
setConsoleColor(14);
printf("\nEnter new task: ");
setConsoleColor(15);
takeInput(tasks[taskIndex].name);
while (getchar() != '\n');
setConsoleColor(14);
printf("Enter new notes: ");
setConsoleColor(15);
takeInput(tasks[taskIndex].notes);
setConsoleColor(14);
printf("Enter new day (1-31): ");
setConsoleColor(15);
scanf("%d", &tasks[taskIndex].day);
while(tasks[taskIndex].day < 1 || tasks[taskIndex].day > 31) {
printf("Invalid day. Please enter a day between 1 and 31: ");
scanf("%d", &tasks[taskIndex].day);
}
setConsoleColor(14);
printf("Enter new month (1-12): ");
setConsoleColor(15);
scanf("%d", &tasks[taskIndex].month);
while(tasks[taskIndex].month < 1 || tasks[taskIndex].month > 12) {
printf("Invalid month. Please enter a month between 1 and 12: ");
scanf("%d", &tasks[taskIndex].month);
}
setConsoleColor(14);
printf("Enter new year: ");
setConsoleColor(15);
scanf("%d", &tasks[taskIndex].year);
while(tasks[taskIndex].year < 0) {
printf("Invalid year. Please enter a positive year: ");
scanf("%d", &tasks[taskIndex].year);
}
setConsoleColor(14);
printf("\nTask edited successfully!");
setConsoleColor(15);
} else {
setConsoleColor(14);
printf("\nEdit cancelled.");
setConsoleColor(15);
}
while (getchar() != '\n');
}
void deleteTask(struct task tasks[MAX_TASKS], int *numTasks, int selectedDate, int selectedMonth, int selectedYear) {
if (*numTasks == 0) {
printf("\nNo tasks to delete.\n");
} else {
int taskIndex = -1;
for (int i = 0; i < *numTasks; i++) {
if (tasks[i].day == selectedDate && tasks[i].month == selectedMonth && tasks[i].year == selectedYear) {
taskIndex = i;
break;
}
}
if (taskIndex != -1) {
for (int i = taskIndex; i < *numTasks - 1; i++) {
tasks[i] = tasks[i + 1];
}
(*numTasks)--;
printf("\nTask deleted successfully!\n");
} else {
printf("\nNo task found on the selected date.\n");
}
}
saveTasks(tasks, *numTasks);
printf("Press Enter to go back...");
while (getchar() != '\n');
}
void changePassword() {
struct user user;
int userFound = 0;
char username[100], pword[100];
setConsoleColor(14);
printf("Enter your username: ");
setConsoleColor(15);
takeInput(username);
setConsoleColor(14);
printf("Enter your current password: ");
setConsoleColor(15);
takePassword(pword);
FILE *fp = fopen("Users.dat", "r+b");
if (fp == NULL) {
perror("Error opening file");
return;
}
while (fread(&user, sizeof(struct user), 1, fp) == 1){
if (strcmp(user.username, username) == 0 && strcmp(user.password, pword) == 0) {
userFound = 1;
break;
}
}
if (!userFound) {
setConsoleColor(14);
printf("\n\nUser is not registered or incorrect password!");
setConsoleColor(15);
setConsoleColor(14);
printf("\nPress Enter to continue...");
setConsoleColor(15);
while (getchar() != '\n');
} else {
setConsoleColor(14);
printf("\nEnter your new password: ");
setConsoleColor(15);
takePassword(user.password);
size_t len = strlen(user.password);
if (len > 0 && user.password[len - 1] == '\n') {
user.password[len - 1] = '\0';
}
fseek(fp, -sizeof(struct user), SEEK_CUR);
fwrite(&user, sizeof(struct user), 1, fp);
setConsoleColor(14);
printf("\nPassword changed successfully!");
setConsoleColor(15);
setConsoleColor(14);
printf("\nPress Enter to continue...");
setConsoleColor(15);
while (getchar() != '\n');
}
fclose(fp);
system("cls");
}
void saveTasks(struct task tasks[MAX_TASKS], int numTasks) {
FILE *file = fopen("tasks.dat", "wb");
if (file == NULL) {
perror("Error opening file!");
return;
}
fwrite(tasks, sizeof(struct task), numTasks, file);
fclose(file);
}
void signIn(struct task tasks[MAX_TASKS], int *numTasks) {
struct user user = {0};
int userFound = 0;
char username[100], pword[100];
int taskIndex = 0;
setConsoleColor(14);
printf("Enter your username : ");
setConsoleColor(15);
takeInput(username);
setConsoleColor(14);
printf("Enter your password : ");
setConsoleColor(15);
takePassword(pword);
FILE *fp = fopen("Users.dat", "rb");
if (fp == NULL) {
perror("Error opening Users.dat");
return;
}
while (fread(&user, sizeof(struct user), 1, fp) == 1) {
if (strcmp(user.username, username) == 0 && strcmp(user.password, pword) == 0) {
userFound = 1;
break;
}
}
fclose(fp);
if (!userFound) {
setConsoleColor(14);
printf("\n\nUser is not registered or incorrect password!");
setConsoleColor(15);
setConsoleColor(14);
printf("\nPress Enter to continue...");
setConsoleColor(15);
while (getchar() != '\n');
system("cls");
return;
}
int menuChoice;
do {
clearConsoleScreen();
setConsoleColor(14);
printf("\n\t\t\t\t-----What do you want to do today?-----");
setConsoleColor(15);
setConsoleColor(14);
printf("\n1. See your schedule and calendar");
setConsoleColor(15);
setConsoleColor(14);
printf("\n2. Add your task and notes");
setConsoleColor(15);
setConsoleColor(14);
printf("\n3. Log out");
setConsoleColor(15);
setConsoleColor(14);
printf("\nEnter your choice: ");
setConsoleColor(15);
scanf("%d", &menuChoice);
while (getchar() != '\n');
switch (menuChoice) {
case 1:{
int targetMonth, targetYear;
do{
setConsoleColor(14);
printf("Enter the month (1-12): ");
setConsoleColor(15);
if (scanf("%d", &targetMonth) != 1 || targetMonth < 1 || targetMonth > 12) {
setConsoleColor(14);
printf("Invalid month. Press Enter to go back.\n");
setConsoleColor(15);
while (getchar() != '\n');
getchar();
}
}while (targetMonth < 1 || targetMonth > 12);
do {
setConsoleColor(14);
printf("Enter the year (2023-2033): ");
setConsoleColor(15);
if (scanf("%d", &targetYear) != 1 || targetYear < 2023 || targetYear > 2033) {
setConsoleColor(14);
printf("Invalid year. Press Enter to go back...\n");
setConsoleColor(15);
while (getchar() != '\n');
getchar();
}
}while (targetYear < 2023 || targetYear > 2033);
while(getchar() != '\n');
displayCalendar(targetMonth, targetYear, tasks, *numTasks, 0, 0, 0);
displayTasks(tasks, *numTasks, tasks[taskIndex].day, tasks[taskIndex].month, tasks[taskIndex].year);
break;
}
case 2:{
setConsoleColor(14);
printf("\nEnter task name: ");
setConsoleColor(15);
takeInput(tasks[*numTasks].name);
setConsoleColor(14);
printf("Enter the notes: ");
setConsoleColor(15);
takeInput(tasks[*numTasks].notes);
setConsoleColor(14);
printf("Enter the day (1-31): ");
setConsoleColor(15);
scanf("%d", &tasks[*numTasks].day);
if (tasks[*numTasks].day < 1 || tasks[*numTasks].day > 31) {
setConsoleColor(14);
printf("Invalid day\n");
setConsoleColor(15);
break;
}
setConsoleColor(14);
printf("Enter month (1-12): ");
setConsoleColor(15);
scanf("%d", &tasks[*numTasks].month);
if (tasks[*numTasks].month < 1 || tasks[*numTasks].month > 12) {
setConsoleColor(14);
printf("Invalid month\n");
setConsoleColor(15);
break;
}
setConsoleColor(14);
printf("Enter the year (2023-2033): ");
setConsoleColor(15);
scanf("%d", &tasks[*numTasks].year);
if (tasks[*numTasks].year < 2023 || tasks[*numTasks].year > 2033){
setConsoleColor(14);
printf("Invalid year\n");
setConsoleColor(15);
break;
}
(*numTasks)++;
saveTasks(tasks, *numTasks);
setConsoleColor(14);
printf("\nTask added successfully!");
setConsoleColor(15);
setConsoleColor(14);
printf("\nPress Enter to continue...");
setConsoleColor(15);
getch();
break;
}
case 3:
printf("\nLogging out...");
printf("\nPress Enter to continue..");
while (getchar() != '\n');
clearConsoleScreen();
break;
default:
setConsoleColor(14);
printf("\nInvalid choice.");
setConsoleColor(15);
setConsoleColor(14);
printf("\nPress Enter to go back...");
setConsoleColor(15);
while (getchar() != '\n');
}
} while (menuChoice != 3);
}
void loadTasks(struct task tasks[MAX_TASKS], int *numTasks) {
FILE *file = fopen("tasks.dat", "rb");
if (file == NULL) {
*numTasks = 0;
return;
}
*numTasks = fread(tasks, sizeof(struct task), MAX_TASKS, file);
fclose(file);
}
int main() {
FILE *fp;
int choice;
struct task tasks[MAX_TASKS];
int numTasks = 0;
int targetDay, targetMonth, targetYear;
loadTasks(tasks, &numTasks);
do {
displayMenu();
choice = getMenuChoice();
switch (choice) {
case 1:
signIn(tasks, &numTasks);
break;
case 2:
createAccount();
break;
case 3:
changePassword();
break;
case 4:
setConsoleColor(14);
printf("Exiting the application. Goodbye!\n");
setConsoleColor(15);
break;
default:
setConsoleColor(14);
printf("Invalid choice. Please enter a number between 1 and 4.\n");
setConsoleColor(15);
clearInputBuffer();
setConsoleColor(14);
printf("Press Enter to go back...");
setConsoleColor(15);
while (getchar() != '\n');
break;
}
}
while (choice != 4);
if (choice == 1) {
setConsoleColor(14);
printf("\nEnter the day of the month: ");
setConsoleColor(15);
while(1){
if( scanf("%d", &targetDay) == 1){
break;
}else{
setConsoleColor(14);
printf("\nPlease enter a valid number for the day: ");
setConsoleColor(15);
while (getchar() != '\n');
}
}
targetMonth = 1;
targetYear = 2023;
displayCalendar(targetMonth, targetYear, tasks, numTasks, 0, 0, 0);
displayTasks(tasks, numTasks, targetDay, targetMonth, targetYear);
}
COORD coord = {0, 0};
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);
return 0;
}
问题如下：
请帮我解决这个问题，如果还有其他问题，请帮助我解决并了解发生了什么。非常感谢你mcuh
本网站不接受为最小的可重现示例转储 874 行代码。
这是一个明显的问题，您应该修复，但不会导致报告的任何问题：
while (getchar() != '\n');int flush_input(void) {
int c;
while ((c = getchar()) != EOF && c != '\n')
continue;
return c;
}