COSC 236 Lecture Notes - Lecture 4: Reverse Polish Notation, Increment And Decrement Operators, Data Validation

• School: Towson University
• Department: Computer Science
• Course: COSC 236
• Professor: Professor Alkarouf

Document Summary

Main topics: goal of a loop. A structure that allows you to repeat instructions more than once. Count ++; count --: the increment and decrement operators, the while loop. Use this for input validation: the do-while loop, for loops, nested for loops. The increment and decrement operators: numerous times where a variable must be incremented or decremented. Number-- = number 1: java provides shortened ways to increment and decrement a varia(cid:271)le(cid:859)s (cid:448)alue, using the ++ or unary operators, this task can be completed quickly. Public class incrementdecrement public static void main(string[] args) int number = 4; //number starts out with 4. //display the value in number syste(cid:373). out. pri(cid:374)tl(cid:374)(cid:894)(cid:862)(cid:374)u(cid:373)(cid:271)er is(cid:863) + (cid:374)u(cid:373)(cid:271)er(cid:895); syste(cid:373). out. pri(cid:374)tl(cid:374)(cid:894)(cid:862)i (cid:449)ill de(cid:272)re(cid:373)e(cid:374)t (cid:374)u(cid:373)(cid:271)er. (cid:863)(cid:895); //display the value in number once more system. out. pri(cid:374)tl(cid:374)(cid:894)(cid:862)no(cid:449), (cid:374)u(cid:373)(cid:271)er is(cid:863) + (cid:374)u(cid:373)(cid:271)er(cid:895); Differences between prefix and postfix: when an increment or decrement are the only operations in a statement, there is no difference between prefix and postfix notation, when used in an expression: