detection of integer values

[96AX92yv]

hello, i am having trouble finding a way to detect integers from an external text file. i currently have this code:

while(inputfile.get(wc))
{
			char character = inputfile.get(wc);
			if (character + 1 != NULL)
			{
				cout << character << endl;
			}			
		}

this does not work as if (character + 1 != NULL) comes up with errors.
is there a way to detect ints? can someone help?

[abhishekm71]

Integers can be tested by the condition (character >= '0' && character <= '9').
Your while loop does not seem to be correct either. Why are you reading a character again inside the loop after reading it while checking for the while condition?

[ne555]

http://www.cplusplus.com/reference/cctype/isdigit/

Or simply try to read an integer

int n;
if( std::cin>>n )
   //read successful
else
   //it was not a number 

[96AX92yv]

thanks that helps alot