Recieving Data in Serial Communication

Question

Respected members

In my application i am recieveing data serially from com3 it is an integer variable , now i want to transfer this data in a form of string to com1 the string will be like "#0 Pa"  here a is integer value recieved from ' com3' , i know how to recieve and send data serially my code is working fine with it , but i am struck how can i form string code so it automatically take integer value recieved from com3 and send to com1 , basically how i can formed string with a variable value recieved and some character which are constant plz help me i will be very thankfull