Difference between revisions of "Pre and Post Increment and Decrement"
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| − | + | '''Pre and Post Increment and Decrement''' | |
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| − | + | <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> | |
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| − | + | <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> | |
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| − | + | <span style="color:#a52a2a;"><span style="font-size: 12px;">'''Examples'''</span></span> | |
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| − | + | <span style="color:#000000;">number a = 1;</span> | |
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| − | + | <span style="color:#000000;">number b;</span> | |
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| − | + | <span style="color:#000000;">b = ++a;</span> | |
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| − | + | <span style="color:#000000;">print(b); </span><span style="color:#008000;">// 2</span> | |
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| − | + | <span style="color:#000000;">print(a); </span><span style="color:#008000;">// 2</span> | |
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| − | + | <span style="color:#000000;">b = --a;</span> | |
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| − | + | <span style="color:#000000;">print(b); </span><span style="color:#008000;"> // 1</span> | |
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| − | + | <span style="color:#000000;">print(a); </span><span style="color:#008000;">// 1</span> | |
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| − | + | <span style="color:#000000;">number c = 3;</span> | |
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| − | + | <span style="color:#000000;">number d;</span> | |
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| − | + | <span style="color:#000000;">d = c++;</span> | |
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| − | + | <span style="color:#000000;">print(d); </span><span style="color:#008000;">// 3</span> | |
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| − | + | <span style="color:#000000;">print(c); </span><span style="color:#008000;">// 4</span> | |
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| − | + | <span style="color:#000000;">d = c--;</span> | |
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| − | + | <span style="color:#000000;">print(d); </span><span style="color:#008000;">// 4</span> | |
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| − | + | <span style="color:#000000;">print(c); </span><span style="color:#008000;">// 3</span> | |
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| + | [[Category:Data_Types_Literals_and_Variables]] | ||
Revision as of 05:01, 14 September 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
