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= Pre and Post Increment and Decrement = | |||
<span style="color:#000000;">++x is pre-increment and --x is pre-decrement</span> | <span style="color:#000000;">++x is pre-increment and --x is pre-decrement</span> | ||
<span style="color:#000000;">x++ is post-increment and x-- is post-decrement</span> | <span style="color:#000000;">x++ is post-increment and x-- is post-decrement</span> | ||
<span style="color:#000000;">With ++x and --x: means x is incremented '''BEFORE''' being used.</span> | <span style="color:#000000;">With ++x and --x: means x is incremented '''BEFORE''' being used.</span> | ||
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<span style="color:#000000;">With x++ and x--: means x is incremented '''AFTER''' being used.</span> | <span style="color:#000000;">With x++ and x--: means x is incremented '''AFTER''' being used.</span> | ||
==== <span style="color:#a52a2a;"><span style="font-size: 12px;">'''Examples'''</span></span> ==== | |||
<span style="color:#a52a2a;"><span style="font-size: 12px;">'''Examples'''</span></span> | |||
< | <source lang="javascript">number a = 1; | ||
number b; | |||
b = ++a; | |||
print(b); // 2 | |||
print(a); // 2 | |||
b = --a; | |||
print(b); // 1 | |||
print(a); // 1</source> | |||
< | <source lang="javascript">number c = 3; | ||
number d; | |||
d = c++; | |||
print(d); // 3 | |||
print(c); // 4 | |||
d = c--; | |||
print(d); // 4 | |||
print(c); // 3</source> | |||
[[Category: | [[Category:Operators]] | ||
Latest revision as of 07:05, 14 December 2011
Pre and Post Increment and Decrement
++x is pre-increment and --x is pre-decrement
x++ is post-increment and x-- is post-decrement
With ++x and --x: means x is incremented BEFORE being used.
With x++ and x--: means x is incremented AFTER being used.
Examples
number a = 1;
number b;
b = ++a;
print(b); // 2
print(a); // 2
b = --a;
print(b); // 1
print(a); // 1
number c = 3;
number d;
d = c++;
print(d); // 3
print(c); // 4
d = c--;
print(d); // 4
print(c); // 3