Const topic

i think const means that it makes the initialized variables’es value fixed…

preprocessor directory- It is pre written code by somone where #include tells the program to a certain library and isotream is the name of that library.

main() - it a fuction in which we define everyhting. our program can not run without main fucntion.

experssion statement- these are the statement or messages we want to print on the output display.

declaration statement- these are the declaring statement where we declare a variable or any other oparator a value.

expression statement- in this we tel the compiler to do all the work in decareation statement and then print the ouput.

return stement- in this we tell the compier r=to return to the main.

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