converting char* to int

[FeZedra]

Hi, when trying to convert this:
char* buffer = "asddddddddddd 500 what";
to int it gives "0"
heres my code:

#include <iostream>
#include <cstdlib>

int main()
{
	char* buffer = "asddddddddddd 500 what";
	int i = atoi(buffer);
	std::cout << i << std::endl;
	return 0;
}

wats wrong?

[Zhuge]

http://www.cplusplus.com/reference/clibrary/cstdlib/atoi/

atoi() stops at the first non-whitespace character (in this case, 'a') and tries to convert it to a number. This doesn't work, so it returns 0.

[FeZedra]

So, what should i use?

[m4ster r0shi]

Use this:

#include <iostream>
#include <sstream>
#include <string>
#include <vector>
using namespace std;

int main()
{
    string msg = "abc defg 500 asdf 1234qq 7";
    stringstream buffer(msg);
    vector<int> numbers;
    
    while (true)
    {
        int n;
        buffer>>n;
        
        if (!buffer)
        {
            if (buffer.eof()) break;
            
            buffer.clear();
            string temp;
            buffer>>temp;
        }
        else numbers.push_back(n);
    }
    
    for (int i=0; i<numbers.size(); i++)
        cout << numbers[i] << ' ';
    cout << endl;
    
    return 0;
}

[FeZedra]

Thanks