Calculate the day after tomorrow in C + + and Java, respectively, code

#include <iostream> #include <cstdio> #include <cstring>using namespace Std;bool checknum (char c) {if ( C >= ' 0 ' && C <= ' 9 ') return True;return false;} BOOL Checkstring (String str) {if (Checknum (str[0]) &&checknum (str[1]) &&checknum (str[2]) && Checknum (Str[3]) && (str[4]== '-') &&checknum (str[5]) &&checknum (str[6]) && (str[7]== '-') &&checknum (Str[8]) &&checknum (str[9])) return True;return false;   int main () {string Str;int year;int month;int day;while (cin>>str) {int flag = 1;   if (!checkstring (str)) {flag=0;  cout<< "The date format you entered does not match the requirements" <<endl<<endl; }else{year= (str[0]-' 0 ') *1000+ (str[1]-' 0 ') *100+ (str[2]-' 0 ') *10+ (str[3]-' 0 '); month= (str[5]-' 0 ') *10+ (str[6]-' 0 '); day= (str[8]-' 0 ') *10+ (str[9]-' 0 '); if (month==1 | | month==3 | | month==5 | | month==7 | | month==8 | | month==10 | | month==12 {if (Day >=1 && day <=31) {Day + = 2;if (Day >) {month + = 1;day = 1;} if (month >) {yeAr + = 1;month = 1;}} else{flag=0;cout<< "The date you entered does not exist" &LT;&LT;ENDL&LT;&LT;ENDL;}} else if (month==4 | | month==6 | | month==9 | | month==11) {if (Day >=1 && day <=30) {Day + = 2;if (Day >) {mont H + = 1;day = 1;} if (Month >) {year + = 1;month = 1;}} else{flag=0;cout<< "The date you entered does not exist" &LT;&LT;ENDL&LT;&LT;ENDL;}} else if (month = = 2) {if (year%4==0 && year%100!=0) | | (year%400==0)) {//If the leap year if (Day >=1 && day <=29) {Day + = 2;if (Day >) {month + = 1;day = 1;} if (Month >) {year + = 1;month = 1;}}   else{flag=0;    cout<< "The date you entered does not exist" <<endl<<endl; }}else{if (Day >=1 && day <=28) {day + 2;if (Day >) {month + = 1;day = 1;} if (Month >) {year + = 1;month = 1;}}   else{flag=0;    cout<< "The date you entered does not exist" <<endl<<endl;  }}}else{cout<< "The month you entered does not exist" &LT;&LT;ENDL&LT;&LT;ENDL;} if (flag==1) {cout<< "date acquired:" <<year<< "year" <<month<< "month" <<day<< "Day" <  <endl<<endl; }}retUrn 0;} 

Import Java.util.scanner;public class Calculatethedayaftertomorrow {public static Boolean checknum (char c) {// Determines whether the current character is a numeric if (c >= ' 0 ' && C <= ' 9 ') return True;return false;} public static Boolean checkstring (String str) {//Determines whether the string is of the specified date format: Yyyy-mm-ddif (Checknum (Str.charat (0)) && Checknum (Str.charat (1)) && Checknum (Str.charat (2)) && Checknum (Str.charat (3)) && (Str.charat (4) = = '-') && Checknum (Str.charat (5)) && Checknum (Str.charat (6)) && (Str.charat (7) = = '-') & & Checknum (Str.charat (8)) && Checknum (Str.charat (9))) return True;return false; public static void Main (string args[]) {string Str;int year = 0;int month = 0;int Day = 0; Scanner Scanner = new Scanner (system.in), while ((str = scanner.nextline ()) = null) {int flag = 1;IF (!checkstring (str)) { Flag = 0; System.out.println ("The date format you entered does not meet the requirements" + "\ n");} else {//calculated date Year = (Str.charat (0)-' 0 ') * + (Str.charat (1)-' 0 ') * + (Str.charat (2)-' 0 ') * + + (Str.charat (3)-' 0 '); month = (Str.charat (5)-' 0 ') * + (Str.charat (6)-' 0 ');d ay = (Str.charat (8)-' 0 ') * + (str).  CharAt (9)-' 0 ');//The number of days per month is different, category discussion if (month = = 1 | | month = = 3 | | month = = 5 | | month = = 7| | month = = 8 | | month = =) {if (Day >= 1 && days <=) {Day + = 2;if (Day > 31) {//has been month + = 1;day-= 31;} if (Month > 12) {//After two days spanned year + = 1;month = 1;}} else {flag = 0; System.out.println ("The date you entered does not exist" + "\ n");}}  else if (month = = 4 | | month = = 6 | | month = = 9| | month = =) {if (Day >= 1 && day <=) {Day + = 2;if (day >) {month + = 1;day-= 30;} if (Month >) {year + = 1;month = 1;}} else {flag = 0; System.out.println ("The date you entered does not exist" + "\ n");}} else if (month = = 2) {if (year% 4 = = 0 && Year% 100! = 0) | | (Year% 400 = = 0)) {//If the leap year if (Day >= 1 && day <=) {Day + = 2;if (Day >) {month + 1;day-= 29;} if (Month >) {year + = 1;month = 1;}} else {flag = 0; System.out.println ("The date you entered does not existIn "+" \ n ");}} else {//Common year if (day >= 1 && day <=) {Day + = 2;if (Day >) {month + = 1;day-= 28;} if (Month >) {year + = 1;month = 1;}} else {flag = 0; System.out.println ("The date you entered does not exist" + "\ n");}}} else {flag = 0; System.out.println ("The month you entered does not exist" + "\ n");}} if (flag = = 1) {//the date entered through the flag flag is legal System.out.println ("The Day After Tomorrow is:" + year + "years" + month + "month" + day+ "Day" + "\ n");}}}

Reprint Please specify source: http://blog.csdn.net/lindonglian/article/details/46043637

Calculate the day after tomorrow in C + + and Java, respectively, code