Dynamic Memory Allocation in C++ - Revision history

Proj user18: /* Dynamic allocation of objects */

2016-12-19T00:29:15Z

‎Dynamic allocation of objects

2016-12-19T00:28:21Z

‎Dynamic allocation of objects

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‎Dynamic allocation of objects

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‎Dynamic allocation of objects

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‎Dynamic allocation of objects

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‎Dynamic allocation of objects

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‎delete

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‎Frequently Asked Interview Questions

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‎new

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‎new

@@ Line 80: / Line 80: @@
 </syntaxhighlight>
-When '''delete''' is used to delete an object, destructor is invoked. <br>
+When '''delete''' is used to deallocate an object, destructor is invoked. <br>
 <syntaxhighlight lang="c">
   delete obj1;

@@ Line 76: / Line 76: @@
 <syntaxhighlight lang="c">
   TestClass *obj1 = new TestClass;          // Default Constructor is invoked.
-  TestClass *obj2 = new TestClass(10);   // Parameterized Constructor is invoked
+  TestClass *obj2 = new TestClass(10);      // Parameterized Constructor is invoked
   TestClass *obj3 = new TestClass[5];	   // Dynamic array of 5 TestClass Objects is created
 </syntaxhighlight>

@@ Line 74: / Line 74: @@
 When '''new''' is used to create an object, constructor is invoked.<br>
 When '''delete''' is used to delete an object, destructor is invoked. <br>
 == '''Constructor''' ==

@@ Line 73: / Line 73: @@
 Objects can be allocated and deallocated dynamically similar to other basic types using '''new''' and '''delete'''.
-When ''''new'''' is used to create an object, constructor is invoked.<br>
+When '''new''' is used to create an object, constructor is invoked.<br>
-When ''''delete'''' is used to delete an object, destructor is invoked. <br>
+When '''delete''' is used to delete an object, destructor is invoked. <br>
 == '''Constructor''' ==

← Older revision		Revision as of 00:19, 19 December 2016
Line 72:		Line 72:

	Objects can be allocated and deallocated dynamically similar to other basic types using '''new''' and '''delete'''.		Objects can be allocated and deallocated dynamically similar to other basic types using '''new''' and '''delete'''.
		+
		+	When ''''new'''' is used to create an object, constructor is invoked.<br>
		+	When ''''delete'''' is used to delete an object, destructor is invoked. <br>

	== '''Constructor''' ==		== '''Constructor''' ==

← Older revision		Revision as of 00:18, 19 December 2016
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	= Dynamic allocation of objects =		= Dynamic allocation of objects =
		+
		+	Objects can be allocated and deallocated dynamically similar to other basic types using '''new''' and '''delete'''.

	== '''Constructor''' ==		== '''Constructor''' ==

@@ Line 59: / Line 59: @@
 In the first expression, memory allocated to a single element is released.<br>
 <syntaxhighlight lang="c">
-Example: '''delete data;'''<br>
+Example: delete data;
 </syntaxhighlight>
 In the second expression, memory allocated to an array of elements is deleted. <br>
 <syntaxhighlight lang="c">
-Example: '''delete[] data;'''
+Example: delete[] data;
 </syntaxhighlight>

← Older revision		Revision as of 10:19, 18 December 2016
Line 164:		Line 164:


−	= [[~~Frequently Asked~~ Interview Questions]] =	+	= [[Dynamic Memory Interview Questions]] =

@@ Line 26: / Line 26: @@
 A block of memory for 5 integer data is allocated and a pointer to the start of the memory block is returned.
 <br>
 There are 2 ways to check if the memory allocation was successful:<br>