Record Case Detail - ECE280 (Fall 2024) - JOJ

This function is in beta test. Please help improve it in the issues here.

terminate called after throwing an instance of 'std::logic_error'
  what():  basic_string::_M_construct null not valid

Your answer may be identical to the JOJ answer in the first several lines.

However, the main problem you meet now is Runtime Error. And the exit code of your program is -6, which should be 0.

Please double check your code to solve this problem and try again.

Encrypt or decrypt a message using the Polybius Square cipher.
Usage: ./ex3 <command> [outputMode]
Commands:
	-e, --encrypt	Encrypt a message
	-d, --decrypt	Decrypt a message
Output modes:
	-c, --compact	Process the message without spaces
	-s, --sparse	Process the message with spaces