Secret message - code coach

Question

I was trying to do code coach secret message. Here is my code in c++

https://code.sololearn.com/cb2qlbIQ5acs/?ref=app

This code is passing 4 out of 5 test but get failed in test-4

I don't have sololearn premium so i can't see what is going wrong

Any sololearn premium user please check this code

Answer 1

You are writing into an empty string, which is undefined behaviour. Either construct `ec_text` with a sufficient initial size, i.e. `len`, or make it a char instead (since you write the output character by character anyway).

Answer 2

Shadow thanks pal