What is the problem in this code

Question

see at line 194 and 195

It isn't working in switch statement (for option 3 and 4 it terminates without showing any output of that function) while case 1 and 2 works.

but it(function of case 3 and 4) works without switch statement

Answer 1

I run my program on 'cppdroid '
I use sololearn for discuss about errors and to know new things
because I haven't any other source to learn and discuss, our teachers tell us theoretical knowledge only but I have intrest in programming

Answer 2

finally problem solved
Thank youu soooooo much sir
Without your help I could never solve my problem
I didn't know about this error
again thanks a lot sir