What is meant by return type?

Answer 1

main() returns an int type to operating system.therefore, evry main() shud end with a return(0) statement; otherwise a warning or an error might occur.note that default return type for all functions in c++ us int.
hope now u ll understand the concept of return.

Answer 2

The return type is the type of data your function should return. If your function has the return type void it shouldn't return anything; void means nothing. If your function has the return type int or double it should return a number or a variable with the same type as the return type.

Answer 3

Return type means what kind of value your function is giving back
for example int , float , double
int - when ur func returns val like 2 3 4 5 6 17 ...
float - when ur func returns val like 1.2 3.5 4.466 3.14 ...........
double - for values like 235667