其他类型转成string

template <class T>void toString(string& result,const T &t){ //将各种数值转换成字符串 ostringstream oss; oss.clear(); oss << t; result.clear(); result = oss.str();}

string转成其他类型

template <class T>void stringToOther(T &t, const string &s){ stringstream ss; ss.clear(); ss << s; ss >> t;}

类型之间的相互转换

template <class inputType,class outputType>void toConvert(const inputType &input, outputType &output){ stringstream ss; ss.clear(); ss << input; ss >> output;}

完整代码

#include <sstream>#include <iostream>#include <string>using namespace std;template <class T>void toString(string& result,const T& t);template <class T>void stringToOther(T &t, const string &s);template <class inputType,class outputType>void toConvert(const inputType &input, outputType &output);int main(int argc, char** argv){ string s1; double a =1.1111; toString(s1,a); cout<<s1<<endl; double b = 0; double &bptr =b; stringToOther(bptr,s1); cout<<bptr<<endl; string s2 ="2.222"; double c1 =0; double &c1ptr = c1; toConvert(s2,c1ptr); cout<<c1ptr<<endl; return 0;}template <class T>void toString(string& result,const T &t){ //将各种数值转换成字符串 ostringstream oss; oss.clear(); oss << t; result.clear(); result = oss.str();}template <class T>void stringToOther(T &t, const string &s){ stringstream ss; ss.clear(); ss << s; ss >> t;}template <class inputType,class outputType>void toConvert(const inputType &input, outputType &output){ stringstream ss; ss.clear(); ss << input; ss >> output;}

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