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小編給大家分享一下C++實現萬年歷小功能的方法,相信大部分人都還不怎么了解,因此分享這篇文章給大家參考一下,希望大家閱讀完這篇文章后大有收獲,下面讓我們一起去了解一下吧!
具體內容如下
用C++寫了個簡易的萬年歷。
具體功能如下:
1.打印指定年(用戶輸入)所有月份的年歷
2.打印指定年指定月(用戶輸入)的月份
3.打印指定日期(用戶輸入)的星期數
4.可重復輸入
貼上源碼:
#include<iostream> #include<windows.h> #include<iomanip> using namespace std; int number; //菜單鍵 int year, month, day; //年、月、日 int i, j, t; //for循環用的量 int s; //星期X char c; //存放隨機輸入的數字,以實現“按任意鍵返回主菜單”的功能 char months[] = { 0,31,28,31,30,31,30,31,31,30,31,30,31 }; //平年每個月的天數 void Pos(int x, int y); //光標位置 void menu(); //主菜單函數 void runnian(); //如是閏年則變第二個月天數28為29 void oneyear(); //輸出一整年的年歷 void onemonth(); //輸出一個月的月歷 void xianshiweek(); //顯示星期數 void Pos(int x, int y)//光標位置 { COORD pos; HANDLE hOutput; pos.X = x; pos.Y = y; hOutput = GetStdHandle(STD_OUTPUT_HANDLE); SetConsoleCursorPosition(hOutput, pos); } void menu()//主菜單函數 { Pos(40, 3); cout << "***********************************" << endl; Pos(40, 4); cout << "* 歡迎使用萬年歷 *" << endl; Pos(40, 5); cout << "* ---made by pjr *" << endl; Pos(40, 6); cout << "***********************************" << endl; Pos(20, 8); cout << "操作鍵:" << endl; Pos(20, 9); cout << "1.顯示一年的年歷" << endl; Pos(20, 10); cout << "2.顯示一月的月歷" << endl; Pos(20, 11); cout << "3.顯示某一天是星期幾" << endl; Pos(20, 12); cout << "0.退出" << endl; Pos(20, 14); cout << "請輸入操作鍵(0~3):"; cin >> number; if (number < 0 || number>3) { system("cls"); Pos(20, 15); cout << "輸入數字無效,請重新輸入!" << endl; menu(); } } void runnian() //如是閏年則變第二個月天數28為29 { cin >> year; if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) //閏年判斷公式 { months[2] = 29; } } void oneyear() //輸出一整年的年歷 { cout << "請輸入年份:"; runnian(); system("cls"); //清屏 cout << "請輸入年份:" << year << endl << endl; s = (year - 1 + (year - 1) / 4 - (year - 1) / 100 + (year - 1) / 400 + 1) % 7; //該年1月1日的星期數 for (i = 1; i <= 12; i++) { cout << i << "月份的月歷如下:" << endl; cout << setw(6) << "日" << setw(6) << "一" << setw(6) << "二" << setw(6) << "三" << setw(6) << "四" << setw(6) << "五" << setw(6) << "六" << endl; for (j = 0; j < s; j++) { cout << setw(6) << " "; } for (t = 1; t <= months[i]; t++) { cout << setw(6) << t; s = (s + 1) % 7; if (s % 7 == 0) //當打印到星期六時,換行 { cout << endl; } } cout << endl; } fflush(stdin); cout << "請按任意鍵返回主菜單:"; cin >> c; system("cls"); menu(); } void onemonth()//輸出一個月的月歷 { int s = 0; cout << "請輸入年份:"; runnian(); cout << "請輸入月份:"; cin >> month; system("cls"); cout << "請輸入年份:" << year << endl << endl; cout << "請輸入月份:" << month << endl << endl; for (i = 1; i <= month - 1; i++) { s = s + months[i]; //該年1月1日到所求日期前一天的天數 } s = (year - 1 + (year - 1) / 4 - (year - 1) / 100 + (year - 1) / 400 + 1 + s) % 7; //所求日期的星期數 cout << month << "月份的月歷如下:" << endl; cout << setw(6) << "日" << setw(6) << "一" << setw(6) << "二" << setw(6) << "三" << setw(6) << "四" << setw(6) << "五" << setw(6) << "六" << endl; for (j = 0; j < s; j++) { cout << setw(6) << " "; } for (t = 1; t <= months[month]; t++) { cout << setw(6) << t; s = (s + 1) % 7; if (s % 7 == 0) { cout << endl; } } cout << endl; cout << "請按任意鍵返回主菜單:"; cin >> c; system("cls"); menu(); } void xianshiweek() //顯示星期數 { int s = 0; cout << "請輸入年份:"; runnian(); cout << "請輸入月份:"; cin >> month; cout << "請輸入日期:"; cin >> day; system("cls"); cout << "請輸入年份:" << year << endl << endl; cout << "請輸入月份:" << month << endl << endl; cout << "請輸入日期:" << day << endl << endl; for (i = 1; i <= month - 1; i++) { s = s + months[i]; } s = (year - 1 + (year - 1) / 4 - (year - 1) / 100 + (year - 1) / 400 + day + s) % 7; cout << "顯示的星期數如下:" << s << endl; cout << endl; cout << "請按任意鍵返回主界面:"; cin >> c; system("cls"); menu(); } int main()//主函數 { setlocale(LC_ALL, "chs");//轉中文 menu(); while (number != 0) { switch (number) { case 1: { oneyear(); break; } case 2: { onemonth(); break; } case 3: { xianshiweek(); break; } } months[2] = 28; //把months[2]變為初值 } if (number == 0) { system("pause"); } return 0; }
運行效果如下:
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