char comparaison problem

[Daok]

char c = txt.at(0);
		if (c == '  ')
			bG = true;
		else if(c == '13')
			bG = true;
		else if(c == '10') 
			bG = true;//SHOULD go here :(
		else if(c == ';')
			bG = true;
		else
			bG = false;

The problem is in debug that caracter in c = 10 and bG doesn't go to true but will go to the else and will be false...why?