100 to 150 words no plagiarism i What is the difference betw

100 to 150 words, no plagiarism.

(i) What is the difference between = and = operators.

(ii) What is abstraction implemented in C++?

(iii) Rita is writing a C++ program in which, she wants to display the grades (stored in variable grade) as per the table of marks (stored in variable marks) given below:

A – 90-100

B – 80-89

C – 70-79

D < 70

Write the code using appropriate C++ conditional statement so as to help Rita complete her work after accepting marks.

Solution

i) Answer:

There are two operators :

== and =

= is a operator is used to assign the value in the variable in C or C++ language

For example :-

c = a + b ;

   It means after adding the values of \"a\" and \"b\" , the result is assigned in the variable \"c\" . Thus the operator \"=\" is used to assign the value in the variable , or we can say that after the operation on the values of the variables , the result is stored in the variable like \"c\" .

Now we have a = 2;

It means value 2 is assigned in the variable a.

\"==\" on the other hand is an operator used to check the equality between the two variables . For example :-

if( a==b)
{

a = 3;
}

it means if a and b are equal then assign the value 3 in the variable a.

iii) Answer :

#include<iostream.h>

#include<conio.h>

void main()

{

clrscr();

int marks;

cout<<\"Enter marks:=\";

cin>>marks;

if((marks>90)&&(marks<=100))

{

cout<<\"A grade\";

}

else

if((marks>80)&&(marks<=89))

{

cout<<\"B grade\";

}

else

if((marks>70)&&(marks<=79))

{

cout<<\"C grade\";

}

else

if(marks<70)

{

cout<<\"D grade\";

}

getch();

}