What output does the following code generate? Why?
What output does it generate if you make A::Foo() a pure virtual function?
class A {
A() { this->Foo(); }
virtual void Foo() { cout << "A::Foo()" << endl; }
};
class B : public A {
B() { this->Foo(); }
virtual void Foo() { cout << "A::Foo()" << endl; }
};
int main(int, char**)
{
A objectA;
B objectB;
return 0;
}
How to swap two ASCII numbers?
write a function that allocates memory for a single data type passed as a parameter.the function uses the new operator and return a pointer to the allocated memory.the function must catch and handle any exception during allocation
void main() { int i,j=2; for(i=0;i<3;i++) if(j=i) cout<<"Lotus "; else cout<<"Rose "; } Its result is Rose Lotus Lotus.. How? Explain it?
Write a program using one dimensional array that searches a number and display the number of times it occurs on the list of 12 input values. Sample input/output dialogue: Enter 12 values: 13 15 20 13 30 35 40 16 18 20 18 20 Enter number to search: 20 Occurences: 3
What output does this program generate as shown? Why? class A { A() { cout << "A::A()" << endl; } ~A() { cout << "A::~A()" << endl; throw "A::exception"; } }; class B { B() { cout << "B::B()" << endl; throw "B::exception"; } ~B() { cout << "B::~B()"; } }; int main(int, char**) { try { cout << "Entering try...catch block" << endl; A objectA; B objectB; cout << "Exiting try...catch block" << endl; } catch (char* ex) { cout << ex << endl; } return 0; }
Show by induction that 2n > n2, for all n > 4.
2 Answers Karvy, Qatar University,
Deriving time complexity of Binary tree and AVL tree, step by step.
. Write a program using two-dimensional arrays that computes the sum of data in tows and the sum of data in columns of the 3x3 (three by three) array variable n[3][3].
develop a program to calculate and print body mass index for 200 employees
0 Answers Jomo Kenyatta University,
main(){int a=5,b 10,c=2, d;a=b c;d=++a=(--c)*2; printf("%d%d%d%d,a,b,c,d; return o;}
write a program in c++ to scramble a bmp image file using a scramble key 0x7c and an XOR logic. print out the original image, the scrambled image and the program. Note: the first 24bytes of a bmp file contain the header information of the file.
1. Write a program that performs the following. The user inputs a number and then enters a series of numbers from 1 to that number. Your program should determine which number (or numbers) is missing or duplicated in the series, if any. For example, if the user entered 5 as the initial number and then entered the following sequences, the results should be as shown. Input Sequence Output ---------------------- --------------- 1 2 3 4 5 Nothing bad However, if 7 were the high number, the user would see the results on the right for the following number entries: Input Sequence Output ---------------------- --------------- 1 3 2 4 5 Missing 6 Missing 7 And if 10 were the high number and the user entered the numbers shown on the left, note the list of missing and duplicate numbers: Input Sequence Output ---------------------- --------------- 1 2 4 7 4 4 5 10 8 2 6 Duplicate 2 ( 2 times) Missing 3 Duplicate 4 ( 3 times ) Missing 9