Question

I have a string where I need to grab each char and do some checking:

std::string key = "test"
int i = 0;
while (key.at(i))
{
    // do some checking
    i++;
}

The problem here is that, eventually, the index i will be out of range, so the system will crash. How can I fix this?

Answer 1

std::string key = "test"
for(int i = 0; i < key.length(); i++)
{
    //do some checking
}