Difference between revisions of "Pre and Post Increment and Decrement"
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| − | + | {{HelpFiles}} | |
| + | = Pre and Post Increment and Decrement = | ||
| − | | + | <span style="color:#000000;">++x is pre-increment and --x is pre-decrement</span> |
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<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> | ||
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<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> | ||
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| − | <span style="color:#a52a2a; font-size: 12px;">Examples</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:Operators]] | |
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Latest revision as of 08:05, 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
