其他类型转成string
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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
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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
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template < class inputType, class outputType> void toConvert( const inputType &input, outputType &output){ stringstream ss; ss.clear(); ss << input; ss >> output; } |
完整代码
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#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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原文链接:https://www.cnblogs.com/cyssmile/p/12790946.html