In spy life challange i have solved all test cases but test case 4 is not correct can someone help me debug my code ??

Question

https://code.sololearn.com/c8gwndw213Ak/?ref=app

Answer 1

The lines 25, 31, 39, and 52 are all undefined behaviour as you access non-existing memory. Either construct the strings with a sufficient initial size, or use member functions like push_back() or operator+=() to add characters to the end of the string.
Possible fix:

https://code.sololearn.com/cTQ3fAqZRbde/?ref=app

Answer 2

Thank you

Answer 3

I have understand you