Answer:
// program in java.
import java.util.*;
// class definition
class Main
{// main method of the class
public static void main (String[] args) throws java.lang.Exception
{
try{
// object to read input
Scanner scr=new Scanner(System.in);
// ask to enter name
System.out.print("Enter Your name: ");
// read name from user
String NAME=scr.nextLine();
// print message
System.out.println("Greetings,"+NAME);
}catch(Exception ex){
return;}
}
}
Explanation:
Read name from user with the help of scanner object and assign it to variable "NAME".Then print a Greetings message as "Greetings,NAME" where NAME will be replaced with user's input name.
Output:
Enter Your name: Rachel
Greetings,Rachel
<u>Answer:</u>
<em>Assuming that all the necessary declarations are made and given statements are only an extract, we can conclude that the given piece of code contains error. </em>
<u>Explanation:</u>
Let us analyze each one in order.
<em>count >0 </em> This statement is right if we match this with the <em>syntax of regular comparison operation</em>. Here count is an operand, “0” is the constant operand and these two operands are operated by the operator “>”.
when we take total / count >0 Here count>0 returns <em>Boolean and total is assumed to be an integer and an integer cannot be divided by a Boolean value. so it can be rectified as (total / count)>0.
</em>
Photosynthesis is illustrated in the cells to the right of the fourth column
Let P(n) be "a postage of n cents can be formed using 5-cent and 17-cent stamps if n is greater than 63".Basis step: P(64) is true since 64 cents postage can be formed with one 5-cent and one 17-cent stamp.Inductive step: Assume that P(n) is true, that is, postage of n cents can be formed using 5-cent and 17-cent stamps. We will show how to form postage of n + 1 cents. By the inductive hypothesis postage of n cents can be formed using 5-cent and 17-cent stamps. If this included a 17-cent stamp, replace this 17-cent stamp with two 5-cent stamps to obtain n + 1 cents postage. Otherwise, only 5-cent stamps were used and n 65. Hence there are at least three 5-cent stamps forming n cents. Remove three of these 5-cent stamps and replace them with two 17-cent stamps to obtain n + 1 cents postage.Hence P(n + 1) is true.
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