Reading space separated values file in c++ error -

i trying float values out of file use them in program. used following forum construct program read file line line.
values obtained doing appear truncated @ end.

my code

#include <iostream> #include <cstring> #include <sstream> #include <fstream> using namespace std;  int main() {  ifstream file; file.open("test_file.ssv"); string line; while(file.good() && (getline(file, line))) {     istringstream iss(line);     double a, b, c;     iss >> >> b >>c ;     cout << <<endl; } file.close(); return (0); } 

the output obtain

9292.31 32432.2 

while file has following data

9292.3123 4234.66 342.25423 32432.2423 3423.656 341.67841 

any suggestions improve upon this?

your standard stream may have low floating point precision , therefore see few of decimals when outputing float std::cout. use std::ios_base::precision increase precision , using std:: ios::floatfield output fixed or scientific precision , example:

// modify precision #include <iostream>     // std::cout, std::ios      int main () {       double f = 3.14159;       std::cout.unsetf ( std::ios::floatfield );                // floatfield not set       std::cout.precision(5);       std::cout << f << '\n';       std::cout.precision(10);       std::cout << f << '\n';       std::cout.setf( std::ios::fixed, std:: ios::floatfield ); // floatfield set fixed       std::cout << f << '\n';       return 0;     } 

outputs:

3.1416 3.14159 3.1415900000