Difference between revisions of "Pre and Post Increment and Decrement"

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<span style="color:#a52a2a;"><span style="font-size: 12px;">'''Examples'''</span></span>
 
<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;">print(c);&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="color:#008000;">// 3</span>
 
<span style="color:#000000;">print(c);&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="color:#008000;">// 3</span>
 
[[Category:Operators]]
 

Revision as of 04:24, 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