其他类型转成string template class Tvoid 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 Tvoid s
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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