Placement Written test paper for MNC || Computer questions and answers Part – 4
| Ques 91 : Choose the correct answer | ||||
| What does the following function do?
function operation (int a, int b) |
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| Option 1 : Always returns the first parameter | Option 2 : Returns the min of (a,b) | Option 3 : Returns the max of (a,b) | Option 4 : Loops forever | |
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| Ques 92 : Choose the correct answer | ||||
| function g(int n) { if (n > 0) return 1; else return -1; }function f(int a, int b) { if (a > b) return g(b-a); if (a < b) return g(a-b); return 0; }If f(a,b) is called, what is returned? |
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| Option 1 : Always -1 | Option 2 : 1 if a > b, -1 if a < b, 0 otherwise | Option 3 : -1 if a > b, 1 if a < b, 0 otherwise | Option 4 : 0 if a equals b, -1 otherwise | |
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| Ques 93 : Choose the correct answer | ||||
| function g(int n) { if (n > 0) return 1; else return -1; }function f(int a, int b) { if (a > b) return g(a-b); if (a < b) return g(b-a); return 0; }If f(a,b) is called, what is returned? |
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| Option 1 : 1 if a > b, -1 if a < b, 0 otherwise | Option 2 : Always +1 | Option 3 : 0 if a equals b, +1 otherwise | Option 4 : -1 if a > b, 1 if a < b, 0 otherwise | |
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| Ques 94 : Choose the correct answer | ||||
| function g(int n) { if (n > 0) return 1; else return -1; }function f(int a, int b) { if (a > b) return g(a-b); if (a < b) return g(-b+a); return 0; }If f(a,b) is called, what is returned? |
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| Option 1 : Always +1 | Option 2 : 1 if a > b, -1 if a < b, 0 otherwise | Option 3 : -1 if a > b, 1 if a < b, 0 otherwise | Option 4 : 0 if a equals b, -1 otherwise | |
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| Ques 95 : Choose the correct answer | ||||
| function g(int n) { if (n > 0) return 1; else return -1; }function f(int a, int b) { if (a > b) return g(b-a); if (a < b) return g(-a+b); return 0; }If f(a,b) is called, what is returned? |
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| Option 1 : Always +1 | Option 2 : -1 if a > b, 1 if a < b, 0 otherwise | Option 3 : 1 if a > b, -1 if a < b, 0 otherwise | Option 4 : 0 if a equals b, -1 otherwise | |
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| Ques 96 : Choose the correct answer | ||||
| Consider the following code: for i= m to n increment 2 Assuming m < n and exactly one of (m,n) is even, how many times will Hello be printed? |
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| Option 1 : (n – m + 1)/2 | Option 2 : 1 + (n – m)/2 | Option 3 : 1 + (n – m)/2 if m is even, (n – m + 1)/2 if m is odd | Option 4 : (n – m + 1)/2 if m is even, 1 + (n – m)/2 if m is odd | |
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| Ques 97 : Choose the correct answer | ||||
| Consider the following code: for i= m to n increment 2 Assuming m < n and (m,n) are either both even or both odd, How many times will Hello be printed? |
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| Option 1 : (n – m + 1)/2 | Option 2 : 1 + (n – m)/2 | Option 3 : 1 + (n – m)/2 if m is even, (n – m + 1)/2 if m is odd | Option 4 : (n – m + 1)/2 if m is even, 1 + (n – m)/2 if m is odd | |
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| Ques 98 : Choose the correct answer | ||||
| Assuming n > 2, What value does the following function compute for odd n?
function f (int n) |
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| Option 1 : 1 + 2 + 3 + 4 + … + n | Option 2 : 1 + 3 + 5 + 7 + … + n | Option 3 : n/2 + (1 + 3 + 5 + 7 + … + n) | Option 4 : 1 + (1 + 3 + 5 + 7 + … + n) | |
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| Ques 99 : Choose the correct answer | ||||
| Assuming n > 2, What value does the following function compute for even n?
int f (int n) |
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| Option 1 : 1 + 2 + 3 + 4 + … + n | Option 2 : 1 + (2 + 4 + 6 + 8 + … + n) | Option 3 : 1 + n/2 + (4 + 6 + 8 + … + n) | Option 4 : 2 + 4 + 6 + 8 + … + n | |
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| Ques 100 : Choose the correct answer | ||||
| The for loop is equivalent to a while loop when | ||||
| Option 1 : There is no initialization expression | Option 2 : There is no increment expression | Option 3 : A and B combined are true | Option 4 : It is never equivalent | |
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| Ques 101 : Choose the correct answer | ||||
| Consider the statement while (a < 10.0) { a = a*a }Assuming a is positive, for what value of a will this code statement result in an infinite loop? |
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| Option 1 : a < 1.0 | Option 2 : a < sqrt(10) | Option 3 : a > sqrt(10) | Option 4 : a = 0 | |
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| Ques 102 : Choose the correct answer | ||||
| int area(double radius) { return PI*radius*radius; }Which of the following is always true about the function area? |
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| Option 1 : It returns the area of a circle within the limits of double precision. | Option 2 : It returns the area of a circle within the limits of the constant PI. | Option 3 : It returns the area of a circle within the limits of precision of double, or the constant PI, whichever is lower. | Option 4 : None of the above. | |
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| Ques 103 : Choose the correct answer | ||||
| What does this function compute for positive n? function f(int n) |
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| Option 1 : 1 + n | Option 2 : 1 + 2 + 3 + … + n | Option 3 : 1 + n, if n > 1, 1 otherwise | Option 4 : None of the above | |
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| Ques 104 : Choose the correct answer | ||||
| Which of these is not a data type? | ||||
| Option 1 : integer | Option 2 : character | Option 3 : boolean | Option 4 : array | |
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| Ques 105 : Choose the correct answer | ||||
| The construct “if (condition) then A else B” is for which of the following purposes? | ||||
| Option 1 : Decision-Making | Option 2 : Iteration | Option 3 : Recursion | Option 4 : Object Oriented Programming | |
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| Ques 106 : Choose the correct answer | ||||
| In a sequential programming language, code statements are executed in which order? | ||||
| Option 1 : All are executed simultaneously | Option 2 : From top to bottom | Option 3 : From bottom to top | Option 4 : None of these | |
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| Ques 107 : Choose the correct answer | ||||
| A for-loop is used for which of the following purposes? | ||||
| Option 1 : Decision-Making | Option 2 : Iteration | Option 3 : Recursion | Option 4 : None of these | |
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| Ques 108 : Choose the correct answer | ||||
| There are two loops which are nested. This implies which one of the following? | ||||
| Option 1 : Two loop, one after the other | Option 2 : Two loops, one inside the others | Option 3 : One loop with two different iteration counts | Option 4 : Two loops with the same iteration count | |
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| Ques 109 : Choose the correct answer | ||||
| How will 47 be stored as an unsigned 8-bit binary number? | ||||
| Option 1 : 10111101 | Option 2 : 00101111 | Option 3 : 10111000 | Option 4 : 00101101 | |
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| Ques 110 : Choose the correct answer | ||||
| An integer X is saved as an unsigned 8-bit number, 00001011.What is X? | ||||
| Option 1 : 22 | Option 2 : 11 | Option 3 : 10 | Option 4 : None of these | |
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| Ques 111 : Choose the correct answer | ||||
| A variable cannot be used… | ||||
| Option 1 : Before it is declared | Option 2 : After it is declared | Option 3 : In the function it is declared in | Option 4 : Can always be used | |
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| Ques 112 : Choose the correct answer | ||||
| What is implied by the argument of a function? | ||||
| Option 1 : The variables passed to it when it is called | Option 2 : The value it returns on execution | Option 3 : The execution code inside it | Option 4 : Its return type | |
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| Ques 113 : Choose the correct answer | ||||
| Which of the following is true about comments? | ||||
| Option 1 : They are executed only once. | Option 2 : They are not executed | Option 3 : A good program does not contain them | Option 4 : They increase program execution time. | |
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| Ques 114 : Choose the correct answer | ||||
| Neelam wants to share her code with a colleague, who may modify it. Thus she wants to include the date of the program creation, the author and other information with the program. What component should she use? | ||||
| Option 1 : Header files | Option 2 : Iteration | Option 3 : Comments | Option 4 : Preprocessor directive | |
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| Ques 115 : Choose the correct answer | ||||
| Shashi writes a program in C++ and passes it on to Pankaj. Pankaj does some indentation in some statements of the code. What will this lead to? | ||||
| Option 1 : Faster Execution | Option 2 : Lower memory requirement | Option 3 : Correction of errors | Option 4 : Better readability | |
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| Ques 116 : Choose the correct answer | ||||
| Zenab and Shashi independently write a program to find the the mass of one mole of water, which includes mass of hydrogen and oxygen. Zenab defines the variables: integer hydrogen, oxygen, water // Code A while Shashi defines the three quantities as: integer a, b, c // Code BWhich is a better programming practice and why? |
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| Option 1 : Code B is better because variable names are shorter | Option 2 : Code A is better because the variable names are understandable and non-confusing | Option 3 : Code A will run correctly, while Code B will give an error. | Option 4 : Code B will run correctly, while Code A will give an error. | |
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| Ques 117 : Choose the correct answer | ||||
| For solving a problem, which of these is the first step in developing a working program for it? | ||||
| Option 1 : Writing the program in the programming language | Option 2 : Writing a step-by-step algorithm to solve the problem. | Option 3 : Compiling the libraries required. | Option 4 : Code debugging | |
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| Ques 118 : Choose the correct answer | ||||
| A robust program has which one of the following features? | ||||
| Option 1 : It runs correctly on some inputs | Option 2 : It is robust to hardware damage | Option 3 : It can handle incorrect input data or data types. | Option 4 : None of these | |
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| Ques 119 : Choose the correct answer | ||||
| Tarun wants to write a code to divide two numbers. He wants to warn the user and terminate the program if he or she enters 0 as the divisor. Which programming construct can he use to do this? | ||||
| Option 1 : Iteration | Option 2 : Decision-making | Option 3 : Recursion | Option 4 : None of these | |
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| Ques 120 : Choose the correct answer | ||||
| To solve a problem, it is broken in to a sequence of smaller sub-problems, till a stage that the sub-problem can be easily solved. What is this design approach called? | ||||
| Option 1 : Top-down Approach | Option 2 : Bottom-Up Approach | Option 3 : Procedural Programming | Option 4 : None of these | |
