Explore topic-wise InterviewSolutions in Current Affairs.

1. Python uses Automatic Garbage Collection

2. Python is a dynamically typed language.

3. Python runs through an interpreter.

4. Python code tends to be 5 to 10 times shorter than that written in C++.

5. In Python, there is no need to declare types explicitly

6. In Python, a function may accept an argument of any type, and return multiple values without any kind of declaration beforehand.

Sporozoite 

I. Symptoms of malaria: 

1. Fever accompanied by shivering.

2. Joint pain or arthralgia. 3. Vomiting.

4. Anaemia caused due to rupture of RBCs or haemolysis. 

5. Haemoglobinuria. 

6. Retinal damage. 

7. Convulsions

8. Cyclical occurrence of sudden coldness followed by rigor and then fever and sweating lasting for four to six hours. This is called a classic symptom of malaria. 

9. Splenomegaly or enlarged spleen, severe headache, cerebral ischemia, hepatomegaly, i. e. enlarged liver, hypoglycaemia and haemoglobinuria with renal failure may occur in severe infections.

II. Spread / Transmission of malaria:

1. Malaria parasite is transmitted through the female Anopheles mosquito and hence it is known as mosquito-borne disease. Mosquito acts as a vector. 

2. There are four species of Plasmodium, viz., P. vivax, P. falciparum, P. ovale and P. malariae which transmit malaria.

sys.argv is the list of command-line arguments passed to the Python program, argv contains all the items that come along via the command-line input, it’s basically an array holding the command-line arguments of the program.

To use sys.argv, you will first have to import sys. The first argument, sys.argv[0], is always the name of the program as it was invoked, and sys.argv[l] is the first argument you pass to the program (here it is the C++ file).

For example: main(sys.args[1]) Accepts the program file (Python program) and the input file (C++ file) as a list(array). argv[0] contains the Python program which is need not to be passed because by default _main_ contains source code reference and argv[l] contains the name of the C++ file which is to be processed.

Answer (b)  _name_

Trichophyton

welcome – module name

– dot operator

display( ) – function name

PYTHON can be used for processing text, numbers, images, and scientific data

(b) python is a dynamic typed language

Female Culex mosquito

1. Between antigen and antibody there is specificity. 

2. Each antibody is specific for a particular antigen. 

3. On the antigens there are combining sites which are called antigenic determinants or epitopes. 

4. Epitopes react with the corresponding antigen binding sites of antibodies which are called paratopes. 

5. The antigen binding sites are located on the variable regions of the antibody. Variable regions have small variations which make each antibody highly specific for a particular antigen. 

6. Owing to variable region the antibody can recognize the specific antigen.

7. Antibody thus binds to specific antigen in a lock and key manner, forming an antigen- antibody complex.

In Notepad, type the C++ program

#include<iostream>

using namespace std;

class student

{ 

protected:

int mo;

public:

void readno(int rollno)

{

mo = rollno;

}

void writeno( )

{

cout<< “\n Roll no:” <<rno;

}};

class test: public student

{

protected:

float mark1,mark2; 

public:

void readmark(float m1, float m2)

{

mark1 = m1;

mark2 = m2;

}

void writemark( )

{

cout<< “\n mark1 ” << mark1;

cout<< “\n mark2 ” << mark2;

}};

class sports

{

protected:

int score;

public:

void readscore(int s)

{

score = s;

}

void writescore( )

{

cout<< “SCORE : ” <<score;

}};

class result: public test, public sports

{

private: float total; public:

void display( )

{

total = mark1 + mark2;

cout<< “TOTAL MARKS: ” <<total;

}};

int main( )

{

result r;

r.readno(5);

r.readmark(100,100);

r.readscore(200);

r.writeno( );

r.writemark( );

r.display( );

r.writescore( );

}

save this file as hybrid.cpp

Now type the python program in New Notepad file. 

# python hybrid.py -i hybrid.cpp

import sys,os,getopt def main(argv): cpp Jile = ” exe_file = ”

opts, args = getopt.getopt(argv, “i:” ,[‘ifile-])

for o, a in opts:

if o in(“-i” , “–file”):

cpp_file = ”a+ ‘.cpp’

exe_file = a+ ‘.exe’

run(cpp_file, exefile)

def run(cpp_file, exe_file):

print(“Compiling” + cpp_file)

os.system(‘g++ ‘+ cpp_file + ‘-o ‘+ exe_file) 

print(“Running” + exefile)

print(“.......“)

print

os.system(excfile)

print

if name == ’ main

main(sys.argv[1:])

Output:

Rollno : 5

Mark1 : 100

Mark2 : 100

TOTAL MARKS : 200

SCORE : 200

(c) python filename

Answer is (c) Ruby

Correct answer is (b) On the surface of RBCs

Correct answer is (c) Honey bee

Applications of Scripting Languages

1. To automate certain tasks in a program

2. Extracting information from a data set

3. Less code intensive as compared to traditional programming language

4. can bring new functions to applications and glue complex systems together

The input mode in python command is given by -i 

The theoretical difference between the two is that scripting languages do not require the 228 compilation step and are rather interpreted.

For example, normally, a C++ program needs to be compiled before running whereas, a scripting language like JavaScript or Python need not be compiled. A scripting language requires an interpreter while a programming language requires a compiler.

#include<iostream>

using namespace std;

int main( )

{ cout« “WELCOME”;

return (0);

}

The above C++ program is saved in a file welcome.cpp

Python program

Type in notepad and save as welcome.cpp #include<include>

using namespace std;

int main( )

{

cout<<“WELCOME”;

retum(0);

}

Open Notepad and type python program and save as welcome.py 

import sys,os,getopt

def main(argv):

cppfile = ”

exefile = ”

opts, args = getopt.getopt(argv, “i:” , [ifile = ‘])

for o,a in opts:

if o in (“_i” , ” ifile “):

cpp_file = a+ ‘.cpp’

exe_file = a+ ‘.exe’

run(cpp_file, exe_file)

def run(cpp_file, exe_file):

print(“compiling” +cpp_file)

os.system(‘g++’ +cpp_file + ‘_o’ + exe_file) 

print(“Running” + exe_file)

print(“……")

print

os.system(exe_file)

print

if — name — == ‘–main –‘;

main(sys.argv[1:])

output:

.................

WELCOME

...................

Answer is Java

Correct answer is (c) Rh -ve

cls is used to clear the screen

(c) All are true

many values can be returned by a function in python.

We use modules to break down large programs into small manageable and organized files. Furthermore, modules provide reusability of code. We can define our most used functions in a module and import it, instead of copying their definitions into different programs.

Garbage Collection

SWIG (Simplified Wrapper Interface Generator. Both C and C++)

MinGW (Minimalist GNU for Windows)

cython is a python like language for writing c extensions

(a) MinGW-w64

pythons’ sys module provides access to same variables and functions that interact with the interpreter.

(d) all of these

. is used to access the functions of a imported value

run command of os module executes the exe file

MinGW refers to a set of runtime header files used in compiling and linking the code of c, C++, Fortran to run on window os

We have,

a⁴ – 1/b⁴

= (a²)² – (1/b²)²

= (a² + 1/b²) (a² – 1/b²)

= (a² + 1/b²) (a – 1/b) (a + 1/b)

We have,

x³ – 144x

= x [x² – (12)²]

= x (x + 12) (x – 12)

We have,

25x⁴y⁴ – 1

= (5x²y²)² – (1)²

= (5x²y² – 1) (5x²y² + 1)

We have,

9 (a – b)² – 100 (x – y)²

= [3 (a – b)]² – [10 (x – y)]

= [3 (a – b) + 10 (x + y)] [3 (a – b) – 10 (x – y)] [3a – 3b + 10x – 10y] [3a – 3b – 10x + 10y]

We have,

(x – 4y)² – 625

= (x – 4y)² – (25)²

= (x – 4y + 25) (x – 4y – 25)

(b) 5/2

Explanation: By the law of exponent we know: a^-n = 1/aⁿ.

Hence, (2/5)^-1

= 1/(2/5)

= 5/2

(b) (3/2)^-4

Explanation: 

(2/3)⁴ 

= 1/(2/3)^-4 

= (3/2) ^-4

Correct option is (B) -1/8

\((\frac{-1}{2})^3\) \(=\frac{(-1)^3}{2^3}\) \(=\frac{-1}{8}\)

Correct option is  B) -1/8

(c) -1/8

Explanation: 

Cube of -1/2 

= (-1/2)³

= (-1/2) × (-1/2) × (-1/2) 

= -1/8

(b) x⁶

For any non-zero integers ‘a’ and ‘b’ and whole numbers m and n,

a^m ÷ aⁿ = a^m–n , m>n

so, x⁸ ÷ x²

= x⁸/x²

= x^{8 – 2}

= x⁶

Cube of -2 = (-2)³ = -(2)³

And square of +4 = 4²

∴ The product of the cube of (–2) and the square of (+4)

= -(2)³ × 4²= -8 × 16 = -128

∴ The product of the cube of (–2) and the square of (+4) is -128.

(c) fifth power of x

From the question, it is given that,

The square of x = x²

The cube of x = x³

As per the condition given the question, x² × x³

For any non-zero integers ‘a’ and ‘b’ and whole numbers m and n,

a^m × aⁿ = a^m+n

x² × x³ = x²⁺³

x⁵

Therefore, fifth power of x.

(d) 4/9

Square of (-2/3) is = -2²/3²

= (-2 × -2)/(3 × 3)

= 4/9

(c) 4

Any number can be expressed as a decimal number between 1.0 and 10.0 (including 1.0) multiplied by a power of 10. Such form of a number is called its standard form or scientific notation.

72105.4 is written as 7.21054 × 10⁴

(d) 8.2903

Any number can be expressed as a decimal number between 1.0 and 10.0 (including 1.0) multiplied by a power of 10. Such form of a number is called its standard form or scientific notation.

829030000 is written as 8.2903 × 10⁸