Answer:
The option(B) is the correct answer .
Explanation:
In C++ the // (two slash marks ) indicating the beginning of a comment .The two slash marks ( // ) comment the single line in a program.To use two slash marks ( // ) comment we simply write // in which line we have to make comment.
following are the example of code in c++
#include<iostream.h> // header file
void main() // main method
{
cout<< " india"; // print india
}
here // indicating the beginning of a comment .
This point lies on the x value
Answer:
Both codes are correct.The value of even is true when the number is even.
Explanation:
Code 1:
number %2 ==0 means that when dividing number by 2 is the remainder coming out is zero.If it is true then even becomes is true if it is false then else statement is executes in which even becomes false.Means the number is odd.This code is simple and easy to understand.
Code 2:-
This code is a bit tricky and takes time to understand.even becomes true
when the number is divisible by 0 and false when it is not.
Answer:
The correct answer to the following question will be "Digital Signature".
Explanation:
Digital Signature or Authentication is a mechanism that assures that the meaning of a message has not altered during transit. Whenever you, the sender, digitally sign an agreement, use your formal and informal key pair to encrypt the content of the message.
It helps the data unit receiver to prove the origins and credibility of the data unit and to defend it against falsification.
You can use this Signature Certificates as follows:
- For transmitting digitally agreed to sign and encrypted addresses.
- To execute secure internet-based transactions or to recognize other partners in internet-based transactions.
Therefore, Digital Signature is the right answer.
Answer:
Use of computer in our life is incredibly necessary. Computer science is evaluated and challenged by humans every day. From Engineers to Doctors, Students to Teachers, entrepreneurs to investors, government organization they all use it to perform specific tasks, for entertainment, online earnings, and office work. Computers have made our life easier in these decades. With higher accuracy and quality, less time-consumption, computers can do a lot in a short time while that task can take a lot of time if we do manually. Computers have taken industries and businesses to a worldwide level. They are used at home for online education, entertainment, in offices, hospitals, private firms, NGOs, Software house, Government Sector Etc. The computer is a very vast field in every sector and every aspect of life.
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