crosses initialization of ‘std::istringstream iss’ when using inside while loop [closed]

Answer 1

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The problem lies here:

std::string s = "one two two three one one two";
std::istringstream iss(std::move(s));
    while (iss >> s)
    {
        int tmp = ++s1[s];

You are trying to initialize a variable (int tmp) in a while loop. If you are a computer then this is what you see: Do a while loop with a condition (correct), initialize a NEW variable called tmp with this calculation. Once the loop goes to the second itteration, you tell him, 'initialize a NEW variable called tmp with this calculation', but tmp was already initialized and therefore it's a error.

The solution is:

std::string s = "one two two three one one two";
std::istringstream iss(std::move(s));
    int tmp;
    while (iss >> s)
    {
        tmp = ++s1[s];