.NET C C++ CSS DBA General HTML Java JavaScript JSP JUnit MySQL Networking Oracle Perl Perl PHP PL/SQL RSS Software QA SQL Server Struts Unix Windows XHTML XML

<< < … 58 59 60 61 62 63 64 65 66 67 68 … > >>   Sort: Rank

When should you use multiple inheritance?
When should you use multiple inheritance? There are three acceptable answers: "Never," "Rarely," and "When the problem domain cannot be accurately modeled any other way." 2012-03-19, 3100👍, 0💬

What is the difference between a copy constructor and an overloaded assignment operator?
What is the difference between a copy constructor and an overloaded assignment operator? A copy constructor constructs a new object by using the content of the argument object. An overloaded assignment operator assigns the contents of an existing object to another existing object of the same class. 2012-03-16, 3590👍, 0💬

What is a conversion constructor C++?
What is a conversion constructor C++? A constructor that accepts one argument of a different type. 2012-03-16, 3246👍, 0💬

What is a default constructor? C++
What is a default constructor? C++ Default constructor WITH arguments class B { public: B (int m = 0) : n (m) {} int n; }; int main(int argc, char *argv[]) { B b; return 0; } 2012-03-15, 3310👍, 0💬

How does throwing and catching exceptions differ from using setjmp and longjmp?
How does throwing and catching exceptions differ from using setjmp and longjmp? The throw operation calls the destructors for automatic objects instantiated since entry to the try block. 2012-03-15, 3397👍, 0💬

I write a program in C++ that asks the user for names of students and their cooresponding midterm scores ...
I write a program in C++ that asks the user for names of students and their cooresponding midterm scores ... I write a program in C++ that asks the user for names of students and their cooresponding midterm scores, at the end, it displays each person, their average, gpa, class ave, total a's, b's, e... 2012-03-14, 3447👍, 0💬

What are the differences between a C++ struct and C++ class?
What are the differences between a C++ struct and C++ class? The default member and base-class access specifiers are different. 2012-03-13, 3142👍, 0💬

Explain the scope resolution operator.
Explain the scope resolution operator. It permits a program to reference an identifier in the global scope that has been hidden by another identifier with the same name in the local scope. 2012-03-13, 4311👍, 0💬

How do you link a C++ program to C functions?
How do you link a C++ program to C functions? By using the extern "C" linkage specification around the C function declarations. 2012-03-12, 3274👍, 0💬

How do I initialize a pointer to a function?
How do I initialize a pointer to a function? This is the way to initialize a pointer to a function void fun(int a) { } void main() { void (*fp)(int); fp=fun; fp(1); } 2012-03-12, 3187👍, 0💬

What does extern mean in a function declaration?
What does extern mean in a function declaration? It tells the compiler that a variable or a function exists, even if the compiler hasn’t yet seen it in the file currently being compiled. This variable or function may be defined in another file or further down in the current file. 2012-03-09, 3090👍, 0💬

How do I declare an array of N pointers to functions returning pointers to functions returning pointers to characters?
How do I declare an array of N pointers to functions returning pointers to functions returning pointers to characters? Answer1 If you want the code to be even slightly readable, you will use typedefs. typedef char* (*functiontype_one)(void); typedef functiontype_one (*functiontype_two)(void); functi... 2012-03-09, 3310👍, 0💬

What is the difference between char a[] = “string”; and char *p = “string”; ?
What is the difference between char a[] = “string”; and char *p = “string”; ? Answer1 a[] = “string”; char *p = “string”; The difference is this: p is pointing to a constant string, you can never safely say p[3]=’x'; however you can always say a[3]=’x'; char a[]=”string”; - character array init... 2012-03-08, 3283👍, 0💬

What’s the auto keyword good for?
What’s the auto keyword good for? Answer1 Not much. It declares an object with automatic storage duration. Which means the object will be destroyed at the end of the objects scope. All variables in functions that are not declared as static and not dynamically allocated have automatic storage duratio... 2012-03-08, 2815👍, 0💬

What is the difference between char a[] = “string”; and char *p = “string”;?
What is the difference between char a[] = “string”; and char *p = “string”;? In the first case 6 bytes are allocated to the variable a which is fixed, where as in the second case if *p is assigned to some other value the allocate memory can change. 2012-03-07, 3095👍, 0💬

What can I safely assume about the initial values of variables which are not explicitly initialized?
What can I safely assume about the initial values of variables which are not explicitly initialized? It depends on complier which may assign any garbage value to a variable if it is not initialized. 2012-03-07, 3322👍, 0💬

What does extern mean in a function declaration?
What does extern mean in a function declaration? Using extern in a function declaration we can make a function such that it can used outside the file in which it is defined. An extern variable, function definition, or declaration also makes the described variable or function usable by the succeeding... 2012-03-06, 3272👍, 0💬

What’s the best way to declare and define global variables?
What’s the best way to declare and define global variables? The best way to declare global variables is to declare them after including all the files so that it can be used in all the functions. 2012-03-06, 2992👍, 0💬

How do you decide which integer type to use?
How do you decide which integer type to use? It depends on our requirement. When we are required an integer to be stored in 1 byte (means less than or equal to 255) we use short int, for 2 bytes we use int, for 8 bytes we use long int. A char is for 1-byte integers, a short is for 2-byte integers, a... 2012-03-05, 3402👍, 0💬

Anything wrong with this code? T *p = 0; delete p;
Anything wrong with this code? T *p = 0; delete p; Yes, the program will crash in an attempt to delete a null pointer. 2012-03-05, 4747👍, 0💬

Anything wrong with this code? ......
Anything wrong with this code? T *p = new T[10]; delete p; Everything is correct, Only the first element of the array will be deleted”, The entire array will be deleted, but only the first element destructor will be called. 2012-03-02, 3103👍, 0💬

What problems might the following macro bring to the application?
What problems might the following macro bring to the application? #define sq(x) x*x 2012-03-02, 2978👍, 0💬

You’re given a simple code for the class BankCustomer. Write the following functions ...
You’re given a simple code for the class BankCustomer. Write the following functions ... You’re given a simple code for the class BankCustomer. Write the following functions: * Copy constructor * = operator overload * == operator overload * + operator overload (customers’ balances should be added u... 2012-03-01, 2978👍, 0💬

Explain which of the following declarations will compile and what will be constant ...
Explain which of the following declarations will compile and what will be constant ... Explain which of the following declarations will compile and what will be constant - a pointer or the value pointed at: * const char * * char const * * char * const Note: Ask the candidate whether the first declar... 2012-03-01, 3026👍, 0💬

<< < … 58 59 60 61 62 63 64 65 66 67 68 … > >>   Sort: Rank

.NET C C++ CSS DBA General HTML Java JavaScript JSP JUnit MySQL Networking Oracle Perl Perl PHP PL/SQL RSS Software QA SQL Server Struts Unix Windows XHTML XML