Catch Segmentation fault in c++

Question

Does a try-catch block catch segmentation fault errors?

I am reading a text file using the function given below but sometimes the file is empty and the

Answer 1

You can try to add a little test to see if ifs is valid:

#include 
#include 

int main(int argc, char * argv[]){
   std::ifstream ifs( "notExists" );
   if( ifs.is_open()) {
      char line[1024];
      while(! ifs.fail() && ifs.getline( line, sizeof( line ))) {
        std::cout << line << std::endl;
      }
   }
   else {
      std::cout << "file doesn't exists." << std::endl;
   }
   std::cout << "done." << std::endl;
    return 0;
}

This program runs and output:

file doesn't exists.
done.

bool std::ifstream::is_open();

See the getline global function for more information, if it fail, it set some bit not checked here.

Errors are signaled by modifying the internal state flags:

• eofbit: The end of the source of characters is reached during its operations.
• failbit: No characters were extracted because the end was prematurely found.Notice that some eofbit cases will also set failbit.
• badbit: An error other than the above happened.

Additionally, in any of these cases, if the appropriate flag has been set with is's member function ios::exceptions, an exception of type ios_base::failure is thrown.