C语言编写的项目源码合集

#include<stdio.h> #include<conio.h> #include<stdlib.h> #include<windows.h> #include<string.h> // Define KeyWords #define ENTER 13 #define TAB 9 #define BKSP 8 // Function ProtoType void password(void); void menu(void); void add(void); void search(void); void modify(void); void list(void); void delete(void); void end(void); void main(){ password(); } //Explained the password function in proper detailed. void password() { system("cls"); char pwd[255]; char code[255] = {"Alkaison"}; int i = 0; char ch; printf("Enter your password. Hit ENTER to confirm. \n"); printf("Password:"); while(1) { ch = getch(); // get key if(ch == ENTER || ch == TAB) { pwd[i] = '\0'; break; } else if(ch == BKSP) { if(i > 0) { i--; printf("\b \b"); // for backspace } } else { pwd[i++] = ch; printf("* \b"); // to replace password character with * } } // printf("\n\nPassword:%s\nLength:%d\n\n", pwd, i); -- prints the user input & lenght of string // verifies the password if(strcmp(code, pwd) == 0) { printf("\nCorrect Password!"); Sleep(2000); menu(); } else { printf("\nInvaild Password!"); Sleep(2000); password(); } } void menu() { //clears the terminal screen system("cls"); label1: //clears the input stream - prevents the program from going into infinite loop fflush(stdin); printf(">>> Phone Book Main Menu <<< \n"); printf("> 1. Add Record\n"); printf("> 2. Search Record\n"); printf("> 3. Modify Record\n"); printf("> 4. List Record\n"); printf("> 5. Delete Record\n"); printf("> 6. Close the Phone Book \n\n"); int input; printf("Please enter a number to proceed: "); scanf("%d",&input); switch (input) { case 1: add(); break; case 2: search(); break; case 3: modify(); break; case 4: list(); break; case 5: delete(); break; case 6: end(); break; default: printf("\nXXX - Invaild input - XXX\n\n"); goto label1; break; } } void add() { label1: //clears the input stream - prevents the program from going into infinite loop fflush(stdin); system("cls"); //opening file -- ab+ -- it will create the file if its not there, also used for writing. FILE *pF = fopen("record.txt", "ab+"); char name[255]; char address[255]; char mail[255]; double number; if(pF != NULL) { printf("Enter Name: "); gets(name); printf("Enter Address (City): "); gets(address); printf("Enter Mail-ID: "); gets(mail); printf("Enter Phone No.: "); scanf("%lf",&number); fprintf(pF, "%s %s %s %.0lf \n", name, address, mail, number); } else printf("Unable to open/locate the file."); //closes the file fclose(pF); fflush(stdin); //retry screen char input; printf("Do you wanna enter more records [y/N]: "); scanf(" %c",&input); if(input == 'y' || input=='Y') goto label1; else if(input=='n' || input=='N') { printf("\nRedirecting to main menu."); Sleep(2000); menu(); } else { printf("\nInvaild input. Redirecting to main menu."); Sleep(2000); menu(); } } void search() { label2: system("cls"); fflush(stdin); FILE *pF = fopen("record.txt", "r"); char name[255]; char address[255]; char mail[255]; double number; int flag=0; int compare; char find[255]; printf("Enter the name of the person you want to see the detail: "); gets(find); while(fscanf(pF, "%s %s %s %lf \n", name, address, mail, &number) != EOF) { //strcmp(variable, variable1) -- if both the strings are equal then it will return 0 otherwise a random number. compare = strcmp(find, name); if(compare == 0) { printf("\n>>> Record Found <<< \n\n"); printf("> Name: %s \n", name); printf("> Address: %s \n", address); printf("> Mail ID: %s \n", mail); printf("> Phone No.: %.0lf \n", number); flag = 1; } } fclose(pF); if(flag == 0) printf("\n>>> Record Not Found <<< \n"); fflush(stdin); char input; printf("\nDo you wanna search for more records [y/N]: "); scanf(" %c",&input); if(input == 'y' || input=='Y') goto label2; else if(input=='n' || input=='N') { printf("\nRedirecting to main menu."); Sleep(2000); menu(); } else { printf("\nInvaild input. Redirecting to main menu."); Sleep(2000); menu(); } } void modify() { system("cls"); fflush(stdin); //opening main record file & a temporary file s FILE *pF = fopen("record.txt", "r"); FILE *pTemp = fopen("temporary.txt", "a"); char name[255], address[255], mail[255]; char name1[255], address1[255], mail1[255]; double number, number1; int compare, flag=0; printf("Enter the name of the person you want to see the detail: "); gets(name1); fflush(stdin); system("cls"); while(fscanf(pF, "%s %s %s %lf \n", name, address, mail, &number) != EOF) { compare = strcmp(name1, name); if(compare == 0) { printf("-------------------------------\n"); printf(">>> Record Modification <<< \n"); printf("-------------------------------\n\n"); printf("Enter Name: "); gets(name1); printf("Enter Address (City): "); gets(address1); printf("Enter Mail-ID: "); gets(mail1); printf("Enter Phone No.: "); scanf("%lf",&number1); fprintf(pTemp, "%s %s %s %.0lf \n", name1, address1, mail1, number1); flag = 1; } else fprintf(pTemp, "%s %s %s %.0lf \n", name, address, mail, number); } if(flag == 0) { printf("-------------------------------\n"); printf(">>> Record Not Found <<< \n"); printf("-------------------------------\n\n"); } fclose(pF); fclose(pTemp); //deletes everything from main record file pF = fopen("record.txt", "w"); fclose(pF); pF = fopen("record.txt", "a"); pTemp = fopen("temporary.txt", "r"); //copies records from temporary file to main record file while (fscanf(pTemp, "%s %s %s %lf \n", name, address, mail, &number) != EOF) { fprintf(pF, "%s %s %s %.0lf \n", name, address, mail, number); } fclose(pF); fclose(pTemp); //deletes everything from temporary file pTemp = fopen("temporary.txt", "w"); fclose(pTemp); printf("\n\nProcessing your changes...."); Sleep(3000); menu(); } void list() { system("cls"); FILE *pF = fopen("record.txt", "r"); char name[255]; char address[255]; char mail[255]; double number; //lists all the records from main record files while(fscanf(pF, "%s %s %s %lf \n", name, address, mail, &number) != EOF) { printf("-------------------------------\n"); printf("> Name: %s \n", name); printf("> Address: %s \n", address); printf("> Mail-ID: %s \n", mail); printf("> Phone No.: %.0lf \n", number); printf("-------------------------------\n\n\n"); } fclose(pF); printf("Press any key to get back to main menu.\n"); getch(); menu(); } void delete() { system("cls"); FILE *pF = fopen("record.txt", "r"); FILE *pTemp = fopen("temporary.txt", "a"); char name[255], name1[255], address[255], mail[255]; d