Lvalue required in function main

[ehab mohamed]

When i try to run this program it give me a message that Lvalue required in function main. What is the cause?

[Banfa]

Use comparison == instead of assignment = in you if statement.

An lvalue is a something that can be assigned to more or less.

[donbock]

By the way, you might prefer to change your printf format string from "%d" to "%d\n". The newline is needed because stdout is typically buffered I/O.