oki folks I got some doubts about he following code:
Code:
//Creating a vector that holds integers
#include <iostream>
#include <vector>
using namespace std;

int main(void){
	vector<int> v;
	for (int i = 0; i < 10; i++)
		v.push_back(i);
	for (int i = 0; i < v.size(); i++)
		cout << v[i] << ", ";
	cout << endl;
	for (int i = 0; i < v.size(); i++)
		v[i] = v[i] * 10;
		cout << v[i] << ", ";
	cout << endl;
}
When I compile it against g++ -Wall it reports the following errors:
intvector.cpp: In function `int main()':
intvector.cpp:10: warning: comparison between signed and unsigned integer
expressions
intvector.cpp:13: warning: comparison between signed and unsigned integer
expressions
intvector.cpp:15: error: name lookup of `i' changed for new ISO `for' scoping
intvector.cpp:13: error: using obsolete binding at `i'
So basically I got 2 questions:
1º should I use my for variables as unsigned ints?
2º why is the use of i to all loops invalid? is the book wrong?
Thanks in advance.