Oppure
#include<iostream> #include<stdlib.h> using namespace std; int main() { char *stringa = "0.3"; float number = atof(stringa); cout << "Stringa: "<< stringa << "\n\n" << "Numero: " << number << "\n\n"; return 0; }
int main() { char *stringa = "0.3"; float number = float(stringa)-48; cout << "Stringa: "<< stringa << "\n\n" << "Numero: " << number << "\n\n"; return 0; }