determining True/False.
- by sil3nt
Hi there, the following code
#include <iostream>
using namespace std;
int main(){
char greeting[50] = "goodmorning everyone";
char *s1 = greeting;
char *s2 = &greeting[7];
bool test = s2-s1;
cout << "s1 is: " << s1 << endl;
cout << "s2 is: " << s2 << endl;
if (test == true ){
cout << "test is true and is: " << test << endl;
}
if (test == false){
cout<< "test is false and is: " << test << endl;
}
return 0;
}
outputs:
s1 is: goodmorning everyone
s2 is: ning everyone
test is true and is: 1
here what does the line bool test = s2-s1; actually evaluate?, is it the length of the string?. If so, then seeing as s2 is a smaller than s1 it should be negative correct?, and yet the output is true?.
Also if i change it to bool test = s1-s2; I still end up with the same result. So it doesnt matter whether its negative or positive the it will be true? and only false when 0?.
what does the s2-s1 mean?
-cheers (trying to get rid of doubts:))
