Answer Posted / vignesh1998i

every instruction has it's own address , so only we have got program counters and stack pointers in micro processors, the main use of program counter (computer register) is to point to the next instuction that should be exceuted by the computer from booting till u shut down the system...........

so definetly user define functions and all the functions we have should have a address , that's why , after the operation gets over , it is returning to the main stream..... (using that functional address)

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