Thread: unsigned char declaration

Hi

I understand the declaration "unsigned int" - it simply means that you are going to use only +ve integers starting from 0. But I don't understand what this "unsigned char" declaration is. Let's try to understand with some simple code.

Here is ASCII table. Normal ASCII runs from 0 to 127 (decimal) and the extended from 0 to 255.

Could you please help me with it? Thanks a lot.


Example for Unsigned:

Code:

#include <iostream>

using namespace std;

int main()

{
 	unsigned char a = 100;
 	unsigned char b = a + 59;
 	
 	cout << "enter a = ";
 	cin >> a;
 	
	cout << b << endl;
 	
 	system("pause");
 	
}

Example for signed:

Code:

#include <iostream>

using namespace std;

int main()

{
 	char a = 100;
 	char b = a + 59;
 	
 	cout << "enter a = ";
 	cin >> a;
 	
	cout << b << endl;
 	
 	system("pause");
 	
}