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what is the difference between a++ and ++a? they are integer, thought.

29th Dec 2016, 6:13 PM
Nochains
Nochains - avatar
2 Respuestas
+ 10
Quoting an old post about 'Increment ++ and Decrement -- Operator as Prefix and Postfix' In programming (Java, C, C++, PHP etc. ), increment ++ operator increases the value of a variable by 1 and decrement -- operator decreases the value of a variable by 1. Suppose, a = 5 then, ++a; //a becomes 6 a++; //a becomes 7 --a; //a becomes 6 a--; //a becomes 5 Simple enough till now. However, there is a slight but important difference you should know when these two operators are used as prefix and postfix. ++ and -- operator as prefix and postfix Suppose you use ++ operator as prefix like: ++var. The value of var is incremented by 1 then, it returns the value. Suppose you use ++ operator as postfix like: var++. The original value of var is returned first then, var is incremented by 1. e.g Suppose a = 5, System.out.println(a++); // outputs 5 // but after printing, value stored in a is now 6 System.out.println(a); // outputs 6 System.out.println(++a); //outputs 7
29th Dec 2016, 6:23 PM
Hatsy Rei
Hatsy Rei - avatar
+ 2
this question has been posted a hundred times. use the search functionality in the Q&A section, you'll end up with a ton of useful information
29th Dec 2016, 6:29 PM
seamiki
seamiki - avatar