easy way to read numbers from file

[Gunnar G]

I have a file with numbers (all integers)
123,14,5,2,141345,3,4545, and so on where there is a , (comma) between every
integer or the comma can be replaced with a newline.
How do I put all these integers into vector<int>?

The best idea I have so far is

while (c = getc(file))
if (c>='0' && c<='9'){
number=number*10 + c-'0';
}
else {
vektor.push_back(number);
number=0;
}

Is there any better way?

[Mike Wahler]

"Gunnar G" <de****@comhem.se> wrote in message
news:zd*********************@newsc.telia.net...

I have a file with numbers (all integers)
123,14,5,2,141345,3,4545, and so on where there is a , (comma) between
every
integer or the comma can be replaced with a newline.
How do I put all these integers into vector<int>?

The best idea I have so far is

while (c = getc(file))
if (c>='0' && c<='9'){
number=number*10 + c-'0';
}
else {
vektor.push_back(number);
number=0;
}

Is there any better way?

#include <istream>
#include <sstream>
#include <string>
#include <vector>

std::istream& get_nums(std::istream& file, std::vector<int>& vec)
{
vec.clear();
std::string s;

while(std::getline(file, s))
{
std::istringstream iss(s);
while(std::getline(iss, s, ','))
{
std::istringstream iss(s);
int num(0);

if(iss >> num)
vec.push_back(num);
}
}
return file;
}

-Mike