C語言實(shí)現(xiàn)密碼本小項(xiàng)目

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
 
//定義四個(gè)數(shù)組，用來存放站點(diǎn)、賬號(hào)、密碼、備注的值
char webSite[100][20];
char userName[100][20];
char passWord[100][20];
char reMark[100][20];
//定義一個(gè)全局變量
int g_count = 0;

int main(void)
{
 InitInfo();
 int nChoice = 1;
 
 StartPassWord();
 
 while (nChoice)
 {
 printf("*********************************歡迎使用密碼本*********************************\n");
 printf("        請輸入以下選項(xiàng)進(jìn)行操作：       \n");
 printf("         1、增加數(shù)據(jù)         \n");
 printf("         2、刪除數(shù)據(jù)         \n");
 printf("         3、修改數(shù)據(jù)         \n");
 printf("         4、查詢數(shù)據(jù)         \n");
 printf("         5、全部數(shù)據(jù)         \n");
 printf("         6、結(jié)束程序         \n");
 printf("********************************************************************************\n");
 scanf_s("%d", &nChoice);
 switch (nChoice)
 {
 case 1:
 {
 AddInfo();//增加數(shù)據(jù) 
 }break;
 case 2:
 {
 DelInfo(); //刪除數(shù)據(jù)
 }break;
 case 3:
 {
 EditInfo();//修改數(shù)據(jù)
 }break;
 case 4:
 {
 FindInfo();//查詢數(shù)據(jù)
 }break;
 case 5:
 {
 ReadAllInfo();//查看全部
 }break;
 case 6:
 {
 nChoice = 0;//退出程序
 }break;
 }
 }
 printf("歡迎下次使用！\n");
 
 system("pause");
 return 0;
}

//啟動(dòng)時(shí)輸入密碼
void StartPassWord();
//增加數(shù)據(jù)
void AddInfo();
//刪除數(shù)據(jù)
void DelInfo();
//修改數(shù)據(jù)
void EditInfo();
//查詢數(shù)據(jù)
void FindInfo();
//讀取全部數(shù)據(jù)
void ReadAllInfo();
//保存數(shù)據(jù)
void SaveInfo();
//初始化數(shù)據(jù)
void InitInfo();

//增加數(shù)據(jù)
void AddInfo()
{
 printf("輸入需要存儲(chǔ)的 站點(diǎn)：");
 scanf_s("%s", webSite[g_count], 20);
 printf("輸入需要存儲(chǔ)的 賬號(hào)：");
 scanf_s("%s", userName[g_count], 20);
 printf("輸入需要存儲(chǔ)的 密碼：");
 scanf_s("%s", passWord[g_count], 20);
 printf("輸入需要存儲(chǔ)的 備注：");
 scanf_s("%s", reMark[g_count], 20);
 g_count++;
 SaveInfo();
 InitInfo();
 system("pause");
 system("cls");
}
 
//查看全部
void ReadAllInfo()
{
 FILE *pfile;
 if (fopen_s(&pfile, "data.i", "r") != 0)
 {
 printf("file open fail");
 exit(1);
 }
 
 fscanf_s(pfile, "當(dāng)前個(gè)數(shù)%d\n", &g_count);
 printf("當(dāng)前有%d條數(shù)據(jù)\n", g_count);
 for (int i = 0; i < g_count; i++)
 {
 printf("第%d條數(shù)據(jù)：\n", i + 1);
 printf("站點(diǎn)：%s,賬號(hào)：%s,密碼：%s,備注：%s",
 webSite[i], userName[i], passWord[i], reMark[i]);
 printf("\n");
 
 }
 fclose(pfile);
 system("pause");
 system("cls");
}
 
//保存數(shù)據(jù)
void SaveInfo()
{
 for (int j = 0; j < g_count; j++)
 {
 for (int m = 0; m < 20; m++)
 {
 webSite[j][m] ^= 5;
 userName[j][m] ^= 5;
 passWord[j][m] ^= 5;
 reMark[j][m] ^= 5;
 }
 }
 FILE *pfile;
 if (fopen_s(&pfile, "data.i", "w") != 0)
 {
 printf("file open fail");
 exit(1);
 }
 fseek(pfile, 0, SEEK_SET);
 fprintf(pfile, "當(dāng)前個(gè)數(shù)%d\n", g_count);
 for (int i = 0; i < g_count; i++)
 {
 fwrite(webSite[i], 20, 1, pfile);
 fwrite(userName[i], 20, 1, pfile);
 fwrite(passWord[i], 20, 1, pfile);
 fwrite(reMark[i], 20, 1, pfile);
 fprintf(pfile, "\n");
 }
 fclose(pfile);
}
 
//刪除數(shù)據(jù)
void DelInfo()
{
 char aTemp[20];
 int nFind = 0;
 int nIndex = 0;
 printf("請輸入要?jiǎng)h除的站點(diǎn)：\n");
 scanf_s("%s", aTemp, 20);
 for (; nIndex < g_count; nIndex++)
 {
 if (strcmp(aTemp, webSite[nIndex]) == 0)
 {
 nFind = 1;
 break;
 }
 }
 if (nFind == 1)
 {
 for (int i = nIndex; i < g_count; i++)
 {
 strcpy_s(webSite[i], 20, webSite[i + 1]);
 strcpy_s(userName[i], 20, userName[i + 1]);
 strcpy_s(passWord[i], 20, passWord[i + 1]);
 strcpy_s(reMark[i], 20, reMark[i + 1]);
 }
 g_count--;
 SaveInfo();
 InitInfo();
 printf("刪除成功\n");
 }
 else
 {
 printf("查找失??！\n");
 }
 system("pause");
 system("cls");
}
 
//初始化數(shù)據(jù)
void InitInfo()
{
 FILE *pfile;
 if (fopen_s(&pfile, "data.i", "r") != 0)
 {
 printf("請先建立data.i文件！");
 system("pause");
 exit(1);
 }
 fscanf_s(pfile, "當(dāng)前個(gè)數(shù)%d\n", &g_count);
 for (int i = 0; i < g_count; i++)
 {
 
 fread(webSite[i], 20, 1, pfile);
 fread(userName[i], 20, 1, pfile);
 fread(passWord[i], 20, 1, pfile);
 fread(reMark[i], 20, 1, pfile);
 fscanf_s(pfile, "\n");
 }
 for (int j = 0; j < g_count; j++)
 {
 for (int m = 0; m < 20; m++)
 {
 webSite[j][m] ^= 5;
 userName[j][m] ^= 5;
 passWord[j][m] ^= 5;
 reMark[j][m] ^= 5;
 }
 }
 fclose(pfile);
}
 
//查詢數(shù)據(jù)
void FindInfo()
{
 char aTemp[20];
 int nFind = 0;
 
 printf("請輸入要查詢的站點(diǎn)：\n");
 scanf_s("%s", aTemp, 20);
 for (int nIndex = 0; nIndex < g_count; nIndex++)
 {
 if (strcmp(aTemp, webSite[nIndex]) == 0)
 {
 nFind = 1;
 }
 if (nFind == 1)
 {
 printf("站點(diǎn)：%s,賬號(hào)：%s,密碼：%s,備注：%s\n",
 webSite[nIndex], userName[nIndex], passWord[nIndex], reMark[nIndex]);
 break;
 }
 }
 if (nFind == 0)
 {
 printf("查找失?。n");
 }
 system("pause");
 system("cls");
}
 
//修改數(shù)據(jù)
void EditInfo()
{
 char aTemp[20];
 int nFind = 0;
 
 printf("請輸入要修改的站點(diǎn)：\n");
 scanf_s("%s", aTemp, 20);
 for (int nIndex = 0; nIndex < g_count; nIndex++)
 {
 if (strcmp(aTemp, webSite[nIndex]) == 0)
 {
 nFind = 1;
 }
 if (nFind == 1)
 {
 printf("輸入需要修改的 賬號(hào)：");
 scanf_s("%s", userName[nIndex], 20);
 printf("輸入需要修改的 密碼：");
 scanf_s("%s", passWord[nIndex], 20);
 printf("輸入需要修改的 備注：");
 scanf_s("%s", reMark[nIndex], 20);
 printf("站點(diǎn)：%s,賬號(hào)：%s,密碼：%s,備注：%s\n",
 webSite[nIndex], userName[nIndex], passWord[nIndex], reMark[nIndex]);
 SaveInfo();
 break;
 }
 }
 if (nFind == 0)
 {
 printf("查找失??！\n");
 }
 system("pause");
 system("cls");
}
 
//啟動(dòng)時(shí)輸入密碼
void StartPassWord()
{
 char spw[10] = "abcd"; //程序的啟動(dòng)密碼
 char write[10] = "";
 int nSuccess = 0;
 
 for (int i = 1; i <= 3; i++)
 {
 printf("請輸入啟動(dòng)密碼：\n");
 scanf_s("%s", write, 10);
 if (strcmp(write, spw) == 0)
 {
 nSuccess = 1;
 break;
 }
 else
 {
 printf("你的輸入有誤！還有%d次機(jī)會(huì)\n", 3 - i);
 system("pause");
 system("cls");
 }
 }
 if (nSuccess == 1)
 {
 printf("輸入正確！按任意鍵開始使用程序\n");
 }
 else
 {
 printf("輸入全部錯(cuò)誤！按任意鍵結(jié)束程序\n");
 system("pause");
 exit(1);
 }
 system("pause");
 system("cls");
}

for (int j = 0; j < g_count; j++)
 {
 for (int m = 0; m < 20; m++)
 {
 webSite[j][m] ^= 5;
 userName[j][m] ^= 5;
 passWord[j][m] ^= 5;
 reMark[j][m] ^= 5;
 }
 }