C++中如何将string类型转换为int类型？ 第1页

       #include <string> #include <sstream>  // 包含头文件  int main() {     std::stringstream str2digit;     std::string sint='1', sfloat='1.1', sdouble='1.2';     int dint;     float dfloat;     double ddouble;       str2digit << sint; str2digit >> dint;  // string to int     str2digit.clear();     str2digit << sfloat; str2digit >> dfloat;  // string to float     str2digit.clear();     str2digit << sdouble; str2digit >> ddouble;  // string to double      std::cout << dint << ", " << dfloat << ", " << ddouble << std::endl;      return 0; }