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Call by reference:
Arguments to a function can be passed in two way; one by call by value and other by call
by reference. Call by value is passed either through a constant or variable. The call by reference is passed through address operator (&). In C the function definition argument must be declared as pointer variable to pass by reference, where as in C++ the call by reference can be used without declaring the function arguments as pointer variables. But in C++ both pointer argument method and without pointer argument can be adopted.
void f_ref(int &a, int &b); // void f_ref(int, int) is wrong for reference variable;
void main( )
{int a, b;
f_ref(a, b); // The value a is 10 and b is 20.
}
void f_ref(int &x, int &y)
{x =10;
y=20;
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C Program to FIND THE EVEN WORDS IN THE STRING #include conio.h> #include stdio.h> void main() { char a[50],temp; int i=0,k=0,l[25],c=0,r=0;
Write a program to define a matrix: 1. Write a function that takes an integer and calculates and returns the factorial of the integer. The Factorial of a number "n" is compute
In this project, you will write a software for the Registrar's office of a university called YouOIT to maintain information about students and courses at the university. The reg
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HOW CAN WE EASLY LEARN C++
Destructor: The purpose of destructor is to free the memory when the compiler memory is reduced or not enough to execute certain program. Sometimes there may several objects op
The heart of the modern electronic system is the microprocessor e.g. the video, sound, game consoles, portable phones and domestic appliances. Let us consider the heart of a home c
A: (a) int foo = 123; (b) int bar(123);
After p = new Fred[n], how does the compiler know about n objects to be destructed throughout delete[] p? A: The run-time system hold the number of objects, n, somewhere where
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