‘setprecision’ is not a member of ‘std’

Question

Errors:

~> g++ ssstring.cpp ssstring.cpp: In function ‘int main()’: ssstring.cpp:12:31: error: ‘setprecision’ is not a member of ‘std’ ssstring.cpp:12:52: error: ‘numeric_limits’ is not a member of ‘std’ ssstring.cpp:12:74: error: expected primary-expression before ‘float’ ssstring.cpp:13:30: error: ‘setprecision’ is not a member of ‘std’ ssstring.cpp:13:51: error: ‘numeric_limits’ is not a member of ‘std’ ssstring.cpp:13:73: error: expected primary-expression before ‘float’ ssstring.cpp:14:28: error: ‘setprecision’ is not a member of ‘std’ ssstring.cpp:14:49: error: ‘numeric_limits’ is not a member of ‘std’ ssstring.cpp:14:71: error: expected primary-expression before ‘float’ anisha@linux-trra:~> 

Code:

#include <sstream> #include <iostream> #include <string.h>  int main () {     // Convert `lat`, `lons`, and `vehicleId` to string.     float selectedPointLat = 2.2;     float selectedPointLng = 2.3;     float vehicleId        = 1.0;      std :: stringstream floatToStringLat, floatToStringLng, floatToStringVehicleId;      floatToStringLat       << std :: setprecision (std :: numeric_limits<float> :: digits10 + 1); floatToStringLat  << selectedPointLat;     floatToStringLng       << std :: setprecision (std :: numeric_limits<float> :: digits10 + 1); floatToStringLng << selectedPointLng;     floatToStringVehicleId << std :: setprecision (std :: numeric_limits<float> :: digits10 + 1); floatToStringVehicleId << vehicleId;  } 

Answer 1

You need to include header <iomanip> for std::setprecision and <limits> for std::numeric_limits. These references tell you which header to include.