write a program in c ++ to input a date and check whether the entered date is valid or invalid using else if statement. here the header files are :-
#include<iostream.h>
#include<conio.h>
void main
Answers
Answer:
#include <iostream>
using namespace std;
#include<conio.h>
int main()
{
int dd,mm,yy;
cout<<"Enter date (DD/MM/YYYY format):\n ";
cin>>dd>>mm>>yy;
if(yy>=1900 && yy<=9999)
{
if(mm>=1 && mm<=12)
{
if((dd>=1 && dd<=31) && (mm==1 || mm==3 || mm==5 || mm==7 || mm==8 || mm==10 || mm==12))
cout<<"Date is valid.\n";
else if((dd>=1 && dd<=30) && (mm==4 || mm==6 || mm==9 || mm==11))
cout<<"Date is valid.\n";
else if((dd>=1 && dd<=28) && (mm==2))
cout<<"Date is valid.\n";
else if(dd==29 && mm==2 && (yy%400==0 ||(yy%4==0 && yy%100!=0)))
cout<<"Date is valid.\n";
else
cout<<"Day is invalid.\n";
}
else
{
cout<<"Month is not valid.\n";
}
}
else
{
cout<<"Year is not valid.\n";
}
return 0;
}
Explanation:
I have used namespace std as I am using adv version of c++ compiler
If your pc support iostream.h then no need of using namespace std
Output is attached look at that
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