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Computer Science
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Total Marks-45 |
| Q.1 |
(a) What are the major strengths of a computer? |
(1) |
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(b) State the basic units of the computer. Name the subunits that make up the CPU. |
(2) |
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(c) What is the difference between software and firmware? |
(1) |
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(d) What is meant by the term throughput? What is its significance? |
(2) |
| Q.2 |
(a) What is the difference between copying and moving files and folders? |
(2) |
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(b) How are devises treated in C++? |
(1) |
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(c) What will be the output of following code fragment when the input is
(i) 'C' (ii) 'A' (iii) 'D' (iv) 'F'?
cin>>ch;
switch(ch) {
case 'A' : cout <<"Grade A\n";
break;
case 'B' : cout<<"Grade B\n";
case 'C' : cout<<"Grade C\n";
break;
case 'D' : cout<<"Grade D\n";
break;
default : cout<<"Grade F\n";
}
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(2) |
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(d) What are the advantages and disadvantages of floating-point numbers over integers? |
(3) |
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(e) What will be the output of the following code fragment?
:
cin>>a;
if(a=5)
cout<<"Five";
else
cout<<"Not Five";
if the input given is(i) 7 (ii) 5 |
(2) |
| Q.3 |
(a) Write a program in C++ to find whether the given character is a digit or a letter. |
(2) |
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(b) Construct logical expressions to represent the following conditions:
(i) value is greater than or equal to 15 and less than 40.
(ii) v is odd.
(iii) d is a lowercase character.
(iv) salary is in the range 10000-30000 or id is 3. |
(4) |
| Q.4 |
(a) Write a C++ program that accepts radius of a circle and prints its area. |
(2) |
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(b) What is meant by explicit type conversion? |
(2) |
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(c) Write a C++ program to generate divisors of a number. |
(2) |
| Q.5 |
(a) What will be the value of the following if j=3 initially?
(i) (5*++j)%6
(ii) (5*j++)%6 |
(2) |
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(b) Write one limitation of a Switch statement. |
(1) |
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(c) What is meant by exit controlled loop? Which C++ loops are exit controlled? |
(2) |
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(d) Write a do-while loop that displays numbers 2,4,6,8....18,20. |
(2) |
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(e) Write any two functions of an Operating System. |
(1) |
| Q.6 |
(a) What output shall be produced by following code fragments?
char outer,inner;
for(outer='F' ; outer>='A' ;--outer)
{
for(inner='A' ;inner<=outer ; inner++)
{
cout<<inner;
}
cout<<endl;
}
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(2) |
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(b) Write a program to print Fabonacci series till n terms. |
(2) |
| Q.7 |
(a) Convert(22.25)10 to binary. |
(2) |
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(b) Convert(423)10 to hexadecimal. |
(2) |
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(c) Express -4 in two's complement form. |
(1) |
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