Terminate called after throwing an instance of 'std::invalid_argument' what(): stoi

Question

Problem :

My stoi function is crashing the program with the error message as below :

"****@****:~> g++ -std=c++0x m1.cpp stimulation.h stims.h Task.h exoskeleton.h ARAIG_Sensors.h Profile.h

ARAIG_Sensors.h:1:9: warning: #pragma once in main file [enabled by default]

Profile.h:1:9: warning: #pragma once in main file [enabled by default]

*****@****:~> a.out StimulationConfig.csv TaskConfiguration.csv SampleProfileConfig.csv SampleOutput.txt

First : a.out

Second : StimulationConfig.csv

terminate called after throwing an instance of 'std::invalid_argument'

what():  stoi

Aborted

I am unable to know why is there the instance being passed to the method but it is still returning the above error. Can somebody help me in resolving the issue?

Answer 1

It clearly means that you are giving std::stoi() bad input, that’s why it is throwing the std::invalid_argument exception that you are unfortunately not catching.

std::stoi, std::stol, std::stoll:

Exceptions as below :

· std::invalid_argument : Thrown if no conversion could be performed

· std::out_of_range Thrown if the converted value is out of the range of the result type or if the underlying function std::strtol or std::strtoll is trying to set errno to ERANGE.

std::terminate:

The std::terminate() is called by the C++ runtime when the exception handling fails for the below reason:

If an exception is thrown and not caught :

Here you need to cross-check your input string values that you are converting to integers. As they do not represent the integers.