double nValue = 1.02 =怎么转换成=> stl string = "1.02"

double nValue = 1.02 =如何转换成=> stl string = "1.02"
double nValue = 1.02 =如何转换成=> stl string = "1.02" 
mfc 的CString::Fromat();
stl string 如何实现的

[解决办法]

C/C++ code

#include <iostream>#include <sstream>#include <string>using namespace std;int main(){    double nValue = 1.02;    stringstream stream;    string result;    int i = 1000;    stream << nValue;     stream >> result;     cout << result << endl;}
[解决办法]
char buf[5];
sprintf(buf,"%.2f",nValue);
[解决办法]
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char buf[5];
sprintf(buf,"%.2f",nValue);

[解决办法]
   1.s.Format("%g",nValue);//s DateType:CString
    
  2.char buf[10];
    sprintf(buf,"%g",nValue);
    string Str(buf);