#include <iostream>
#include <sstream>

using namespace std;

string GaugeStr;

float someFloat() {  
   return (float) 3.41; 
}

void someFunction() {

    float pie = someFloat();
    stringstream ss (stringstream::in | stringstream::out);
    ss << pie;
    GaugeStr = ss.str(); 
}

int main() {    
   someFunction();    
   std::cout << GaugeStr << std::endl;
   someFunction();
   std::cout << GaugeStr << std::endl;

   return 0; 
}

3.41
3.41