I cannot get the atof() function to work. I only want the user to input values (in the form of decimal numbers) until they enter '|' and it to then break out the loop. I want the values to initially be read in as strings and then converted to doubles because I found in the past when I used this method of input, if you input the number '124' it breaks out of the loop because '124' is the code for the '|' char.
I looked around and found out about the atof() function which apparently converts strings to doubles, however when I try to convert I get the message
"no suitable conversion function from std::string to const char exists".
And I cannot seem to figure why this is.
void distance_vector(){
double total = 0.0;
double mean = 0.0;
string input = " ";
double conversion = 0.0;
vector <double> a;
while (cin >> input && input.compare("|") != 0 ){
conversion = atof(input);
a.push_back(conversion);
}
keep_window_open();
}
You need
atof(input.c_str());
That would be the "suitable conversion function" in question.
std::string::c_str Documentation:
const char* c_str() const;
Get C string equivalent
Returns a pointer to an array that contains a null-terminated sequence of characters (i.e., a C-string) representing the current value of the string object.