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C++ program to check given date is in valid format or not

mahmoud2506
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2022-05-05
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C++ program to check given date is in valid format or not

As we know that now a days, there are lot of applications are used on the basis of date calculation so that sometime we need to perform operation on date and need check given date is in valid format or not.

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mahmoud2506
2022-05-05
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In this program, we will validate the date whether it is in correct format or not.

Consider the program:

#include <iostream>
using namespace std;

short isValidDate( short dd, short mm, short yy )
{
	if( yy < 0 )
		return 1;
		
	if( mm < 0 || mm > 12)
		return 1;
	
	if( mm == 2)
	{	
		if ( yy % 4 == 0 )
		{
				if( dd > 29 || dd < 0) 
					return 1;
		}
		else
		{
				if( dd > 28 || dd < 0) 
					return 1;
		}
	}
	else if( mm == 1 || mm == 3 || mm  == 5 || mm == 7 || mm == 8 || mm == 10 || mm == 12 )
	{
		if( dd > 31 || dd < 0) 
			return 1;
	}
	else
	{
		if( dd > 30 || dd < 0) 
			return 1;
	}
	
	return 0;
}


int main()
{
	int ret = 0;

	
	ret = isValidDate( 10, 10, 17 );
	if(ret==0)
		cout<<"Given date is valid"<<endl;
	else
		cout<<"Given date is not valid"<<endl;
	
	ret = isValidDate( 10, 15, 17 );
	if(ret==0)
		cout<<"Given date is valid"<<endl;
	else
		cout<<"Given date is not valid"<<endl;
	
	return 0;
}

Output

Given date is valid
Given date is not valid

This program can be used for date validation - to validate number of days in a month, number of months in a year.

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