check if input is integer

[olredixsis]

	
while((cout<<"Enter Year: ")&&(!(cin>>getYear)||getYear<0)){
		cout<<"Invalid Input!"<<endl;
		cin.clear();
		cin.ignore(numeric_limits<streamsize>::max(),'\n');
	}
while((cout<<"Enter Month: ")&&(!(cin>>getMonth)||getMonth<1 || getMonth>12)){
		cout<<"Invalid Input!"<<endl;
		cin.clear();
		cin.ignore(numeric_limits<streamsize>::max(),'\n');
	}

-------------
Is there a function or simplier way to do this? thanks

[screw]

In addition you can check the reading that the read value whether number or not:
http://www.cplusplus.com/reference/iostream/istream/

look fail, good, bad methodes.

[olredixsis]

you mean I'll add these methods to the code above?
Hmmm... what I want is to make the lines shorter...

well, thanks for the help. =)
I think this code is okay.

[olredixsis]

It is still not okay.
When the input is a number preceded by any character like 123asds, it will assign 123 to getYear instead of outputting Invalid Input.
What will I add to this code?
cin.ignore(numeric_limits<streamsize>::max(),'\n');
or should I use sstream?

   int year=-1;
   string mystr;
   cout << "Enter year: ";
   getline (cin,mystr);
   stringstream(mystr) >> year;
   if(year == -1)
      cout<<"Invalid Input"<<endl;

Is there a simplier way to do this?
when the input is not an integer, print invalid input then input again.

[unoriginal]

Alright, cin reads integer values and stops when it encounters the string.

If you want to read the complete string that the user enters use this:

#include <cstdio>
#include <ctype.h>
#include <string.h> // or is it <cstring> ?

int main()
{
   char year[80]; /* Could be 4+1 but from what I'm guessing you want to get the complete "123asds" as it is, so, 80 should be enough? */
   size_t len;
   bool strIsNumber(char *);

   cout << "Enter year: ";
   fgets(year, 80, stdin);
   len = strlen(year);
   if(strIsNumber(year) && len <= 4) {
       /* Do what you will with a valid input here
        ... */
   } else {
   cout << "Invalid input!\n"; // print error message
   }

   return 0;
}

bool strIsNumber(char *buff)
{
   int mybool;

   while(mybool=isdigit(*buff++)) ;

   return mybool ? 1 : 0;
}

That is the only way of getting all what the user enters.
If you want a pure integer then after performing the check use the library function int atoi(char *). The return value is the converted integer - use that.
Don't forget to #include<cstdlib> if you use it.

EDIT: Sorry about the includes. I'm more used to the C header files.
-unoriginal

[olredixsis]

I see. I must use the isdigit() function.
Thanks unoriginal for the idea.

[unoriginal]

No problem, I'm glad that helped.

Also, it only checks for a single char, that's why there was that loop and function.
Don't forget to include <ctype.h>

[kempofighter]

Use this reference to determine the C++ header names instead of the deprecated C headers.
http://cplusplus.com/reference/