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C++ Constructor called. Box2 is equal to or larger than Box1 Pointer to C++ Classes A pointer to a C++ class is done exactly the same way as a pointer to a structure and to access members of a pointer to a class you use the member access operator -> operator, just as you do with pointers to structures. Also as with all pointers, you must initialize the pointer before using it. Let us try the following example to understand the concept of pointer to a class: #include using namespace std; class Box { public: // Constructor definition Box(double l=2.0, double b=2.0, double h=2.0) { cout
C++ int main(void) { Box Box1(3.3, 1.2, 1.5); Box Box2(8.5, 6.0, 2.0); Box *ptrBox; // Declare box1 // Declare box2 // Declare pointer to a class. // Save the address of first object ptrBox = &Box1; // Now try to access a member using member access operator cout
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About the Tutorial C++ is a middle-
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Enumerated Types ..................
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Function Declarations .............
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Structures as Function Arguments ..
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Data Encapsulation Example ........
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My First CGI program ..............
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C++ The ANSI standard has been stab
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C++ C++ Compiler: This is an actual
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3. BASIC SYNTAX C++ When we conside
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C++ add(x, y); A block is a set of
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C++ ??= # ??/ \ ??' ^ ??( [ ??) ] ?
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C++ cout
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C++ The following table shows the v
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C++ typedef int feet; Now, the foll
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C++ type variable_list; Here, type
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C++ Same concept applies on functio
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C++ Global Variables Global variabl
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8. CONSTANTS/LITERALS C++ Constants
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C++ \a Alert or bell \b Backspace \
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C++ } cout
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C++ j = 50000; i = j; cout
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C++ The static storage class instru
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C++ extern int count; void write_ex
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C++ ++ Increment operator, increase
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C++ operand is greater than or equa
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C++ Line 5 - b is either greater th
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C++ Bitwise operator works on bits
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C++ c = ~a; // -61 = 1100 0011 cout
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C++ Copy and paste the following C+
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C++ Condition ? X : Y Conditional o
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C++ int b = 10; int c = 15; int d =
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C++ do...while loop Like a ‘while
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C++ } return 0; When the above code
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C++ { } cout
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C++ } When the above code is compil
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C++ 2 is prime 3 is prime 5 is prim
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C++ Example #include using namespa
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C++ the ‘for’ loop are required
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C++ for equality against a list of
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C++ When the above code is compiled
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C++ An if can have zero to many e
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C++ switch(expression){ case consta
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C++ case 'D' : cout
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C++ C++ specifies that at least 256
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14. FUNCTIONS C++ A function is a g
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C++ Calling a Function While creati
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C++ in the call. This means that ch
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C++ temp = *x; /* save the value at
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C++ int main () { // local variable
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C++ Total value is :300 Total value
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C++ cout
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C++ double d = 200.374; // mathemat
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16. ARRAYS C++ C++ provides a data
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C++ for ( int j = 0; j < 10; j++ )
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C++ Multidimensioned arrays may be
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C++ Once you store the address of f
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C++ { . . . } Way-3 Formal paramete
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C++ . . } Second point to remember
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C++ 110
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C++ int main () { char greeting[6]
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C++ strcat( str1, str2): HelloWorld
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18. POINTERS C++ C++ pointers are e
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C++ // print the address stored in
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C++ convention, if a pointer contai
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C++ int main () { int var[MAX] = {1
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C++ Address of var[1] = 0xbfce42d4
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C++ Above statement is valid and wi
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C++ char *names[MAX] = { "Zara Ali"
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C++ Passing Pointers to Functions C
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C++ } return avg; When the above co
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Page 148 and 149: C++ // declare simple variables int
Page 150 and 151: C++ int temp; temp = x; /* save the
Page 152 and 153: C++ vals[4] = 50 When returning a r
Page 154 and 155: C++ hours:minutes:seconds year\n\0.
Page 156 and 157: C++ using namespace std; int main(
Page 158 and 159: C++ using namespace std; int main(
Page 160 and 161: C++ Error message : Unable to read.
Page 162 and 163: C++ int }book; book_id; Accessing S
Page 164 and 165: C++ using namespace std; void print
Page 166 and 167: C++ #include #include using names
Page 168 and 169: C++ Now, you can use Books directly
Page 170 and 171: C++ Both of the objects Box1 and Bo
Page 172 and 173: C++ created previously. C++ friend
Page 174 and 175: C++ { public: double length; double
Page 176 and 177: C++ internal representation of a cl
Page 178 and 179: C++ A private member variable or fu
Page 180 and 181: C++ You will learn derived classes
Page 182 and 183: C++ Line::Line(void) { cout
Page 184 and 185: C++ Line line(10.0); // get initial
Page 186 and 187: C++ } cout
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Page 190 and 191: C++ } *ptr = len; Line::Line(const
Page 192 and 193: C++ friend class ClassTwo; Consider
Page 194 and 195: C++ int main( ) { } cout
Page 198 and 199: C++ Let us try the following exampl
Page 200 and 201: C++ }; Box(double l=2.0, double b=2
Page 202 and 203: 24. INHERITANCE C++ One of the most
Page 204 and 205: C++ Total area: 35 Access Control a
Page 206 and 207: C++ }; public: int getCost(int area
Page 208 and 209: C++ 25. OVERLOADING (OPERATOR & FUN
Page 210 and 211: C++ Box operator+(const Box&, const
Page 212 and 213: C++ cout
Page 214 and 215: C++ #include using namespace std;
Page 216 and 217: C++ Time(int h, int m){ hours = h;
Page 218 and 219: C++ class Box { double length; doub
Page 220 and 221: C++ } return 0; When the above code
Page 222 and 223: C++ } { cout and the stream insert
Page 224 and 225: C++ Second Distance :F : 5 I : 11 T
Page 226 and 227: C++ } T2.displayTime(); T2++; T2.di
Page 228 and 229: C++ The function call operator () c
Page 230 and 231: C++ int arr[SIZE]; public: safearay
Page 232 and 233: C++ static int i, j; public: void f
Page 234 and 235: C++ } When the above code is compil
Page 236 and 237: C++ return (width * height); } }; c
Page 238 and 239: C++ As you can see, each of the chi
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Page 242 and 243: C++ Designing Strategy Abstraction
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29. INTERFACES C++ An interface des
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C++ }; int getArea() { return (widt
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30. FILES AND STREAMS C++ So far, w
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C++ You read information from a fil
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C++ File Position Pointers Both ist
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C++ Throwing Exceptions Exceptions
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C++ Because we are raising an excep
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C++ struct MyException : public exc
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C++ double* pvalue = NULL; if( !(pv
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C++ class Box { public: Box() { cou
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C++ // second name space namespace
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C++ } return 0; If we compile and r
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34. TEMPLATES C++ Templates are the
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C++ #include #include #include #
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C++ } } If we compile and run above
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C++ test.p. Now, if you check test.
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C++ #if 0 /* This is commented part
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C++ Above line will be transformed
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36. SIGNAL HANDLING C++ Signals are
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C++ Going to sleep.... Going to sle
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37. MULTITHREADING C++ Multithreadi
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C++ } pthread_exit(NULL); int main
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C++ int i; } for( i=0; i < NUM_THRE
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C++ // Initialize and set thread jo
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38. WEB PROGRAMMING C++ What is CGI
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C++ Options All Here, I assume th
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C++ Variable Name Description CONTE
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C++ if ( value != 0 ){ cout
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C++ You can pass information by sim
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C++ First Name: Last Name: Her
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C++ cout
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C++ if( !fi->isEmpty() && fi != (*f
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C++ Passing Dropdown Box Data to CG
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C++ Domain: This is the domain
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C++ Cgicc cgi; const_cookie_iterato
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C++ #include #include #include #
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39. STL TUTORIAL C++ Hope you have
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C++ value of vec [1] = 1 value of v
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C++ The Localization library Exc
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