I need c++ function which is ;
Entrered String DTMF: 123456789012345
Firstly check comming string is started DTMF:
if it is false
if it is true
Split to string two parts
one of them is "DTMF: "
second part is 123456789012345
and first two chracter of second part is cut and conver this "..3456789012345"
and return the string which is
please write deliver time 1 hours