Answer:
b.1
Explanation:
When we are using while loop to compute the product of several values we need to initialize the value holding the product to 1 because when we multiply something with 1 it will give the same number.
If we initialize it with 0 the product will come out to be 0 because anything multiplied by 0 is 0.
we cannot initialize it with NULL because it is not a pointer.
We need to initialize the number since it contains garbage values so it will give product with that value.
Answer:
Following is the loop statement in the Python programming language
salaries=[93.85967,4232.32,13343.3434] #storing the values in salaries
for k in salaries:#iterating the loop
print("%12f"%round(k,2))# print the width of 12 and a precision of 2
Output:
93.860000
4232.320000
13343.340000
Explanation:
Following is the description of the statement
- Declared a dictionary "salaries" and initialized some values into it.
- iterating the for a loop .
- In this for loop print the width 12 and a precision of 2 .The print statement in python will
- print the data with width 12 and a precision of 2 in the console window
Answer:
#include <stdlib.h>
#include <time.h>
#include<iostream.h>
int main(void) {
int seedVal = 0;
seedVal = 4;
srand(seedVal);
/* Solution*/
cout<<rand() % 149 + 100<<endl;
cout<<rand() % 149 + 100<<endl;
return 0;
}
Explanation:
We start with the required include statements to enable use of srand, rand and time functions. I have also added iostream library to use "cout" function.
After that, the seed is initialized using srand(). And then the two rand functions are called with ranges including and between 100 and 149, and printed out.
Answer:
The program to this question can be given as:
Program:
#include <iostream> //header file
using namespace std; //using namespace
double MphAndMinutesToMiles(double milesPerHour, double minutesTraveled) //defining method
{
return (minutesTraveled/ 60.0)*milesPerHour; //return value.
}
int main() //defining main method
{
double milesPerHour,minutesTraveled; //define variable
cout<<"Enter miles per hour :";
cin >> milesPerHour;
cout<<"Enter travelling minutes :";
cin >> minutesTraveled;
cout << "Miles: "<< MphAndMinutesToMiles(milesPerHour, minutesTraveled)<< endl;
return 0;
}
Output:
Enter miles per hour :12
Enter travelling minutes :20
Miles: 4
Explanation:
The explanation of the above C++ program can be given as:
- In the first header file is include the function is define that is "MphAndMinutesToMiles". This function accepts two parameters that are "milesPerHour and minutesTraveled".
- Both parameter datatype is double and the function return type is also double. Inside a function calculate miles and return its value.
- In the main method, two variable defines that takes value from the user side and pass into the function. To print function return value we use "cout" function that prints function return value.
Answer:
b
Explanation:
First, we need to initialize the classifier.
Then, we are required to train the classifier.
The next step is to predict the target.
And finally, we need to evaluate the classifier model.
You will find different algorithms for solving the classification problem. Some of them are like decision tree classification etc.
However, you need to know how these classifier works. And its explained before:
You need to initialize the classifier at first.
All kinds of classifiers in the scikit-learn make use of the method fit(x,y) for fitting the model or the training for the given training set in level y.
The predict(x) returns the y which is the predicted label.And this is prediction.
For evaluating the classifier model- the score(x,y) gives back the certain score for a mentioned test data x as well as the test label y.
