C++ Programming - OOPS Concepts - Discussion
Discussion Forum : OOPS Concepts - General Questions (Q.No. 7)
7.
Which of the following concept of oops allows compiler to insert arguments in a function call if it is not specified?
Discussion:
22 comments Page 1 of 3.
Piyush said:
5 years ago
Default parameters are the parameter used when not any other parameters are given.
(1)
Durgesh said:
8 years ago
It means that suppose you have not given any argument in the function call so by default it would take a value you already specified. This is called a function with default parameters.
Sakthi said:
9 years ago
Hi @Amol.
What was the out put of the example program?
What was the out put of the example program?
Nithyapriya said:
9 years ago
If it specifies means what is the answer?
Guru said:
9 years ago
What is mean by call by value, call by Reference and its difference?
Shalu said:
10 years ago
In call by reference: We passes the value in calling time.
And call by reference: We pass the address in calling time.
Call by reference:
void swap(int &x, int &y)
{
..
....
}
swap(a, b);
call by pointer:
void swap(int *x, int *y)
{
...
..
}
swap(&a, &b);
And call by reference: We pass the address in calling time.
Call by reference:
void swap(int &x, int &y)
{
..
....
}
swap(a, b);
call by pointer:
void swap(int *x, int *y)
{
...
..
}
swap(&a, &b);
(2)
Ash said:
10 years ago
In call by value we directly pass value and in call by reference we pass address of that value.
Nikhil said:
1 decade ago
Pointer also carries a address n reference also carries a address then what is the difference between call by pointer and call by reference.
(1)
Prashant Sable said:
1 decade ago
In call reference we pass address so actual parameter value get change.
In call by value formal parameter get copied into actual parameter so actual parameter doesn't change as both have different memory.
In call by value formal parameter get copied into actual parameter so actual parameter doesn't change as both have different memory.
Manish said:
1 decade ago
Please clarify me What is the difference between call by pointers and call by reference? Explain it with e.g.
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