Answer:
1. It might give your device a malicious virus or can grab your ip, so it isn't a good idea to open unknown websites. Always go to safe webs!
2. It might be a scam, let's say it is for a free iphone and you put your info in. It's a win-lose thing.
Explanation:
Answer: In java the symbol "+" operator is used to perform string concatenation.
Explanation:
String concatenation refers to joining of two strings. So in java + is used to join strings which works provided one of the operands must be a String variable. Then it works by converting the other variable to String variable and joins the second operand to the end of the first operand.
An example of String concatenation is as follows:
int age = 10;
System.out.println("The boys age is " + age);
Output:
The boys age is 10.
here, the age is integer variable but as the phrase "The boys age is" is a String variable so it converts the age to String variable and joins both the Strings.
Answer:
In opp friend function is a function that gives the same access to private and protected data. It is declared in class that is granting access.
Explanation:
#include<iostream.h>
using namespace std;
class Sum
{
int a, b, add;
public:
void input()
{
cout << "Enter the value of l and m:";
cin >> l>>m; taking input from users
}
friend void add(sum &t);
void display()
{
cout << "The sum is :" << z;
}
};
void add(sum & p)
{
p.add = p.a + p.b;
}
int main()
{
sum p1;
p1.input();
add(p1);
p1.display();
return false;
if(display==5)
{
return true; //true is returned if sum is equal to 5
}
else //if they are not the same
{
return false;
}
}
