What will be the output after the following code is executed? def pass_it(x, y): z = y**x return(z) num1 = 3 num2 = 4 answer = p
1 answer:
Answer:
"64" is the output of the above code.
Explanation:
- The function holds the expression with (**) operator which is used to calculate the power in python language.
- So if we write 2**4, then this will give 16 as output. It is because when we calculate the
, then it will become 16.
- The above question passes the num1 and num2 value in the function as an argument which is 3 and 4.
- So 3 will be initialized for x variable and 4 is for y variable.
- So when we calculate
then it will become
which will become 16.
- So 64 is the output for the above question.
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Answer:
/*C++ program that prompts user to enter the name of input file(input.txt in this example) and print the sum of the values in the file to console. If file dosnot exist, then close the program */
//header files
#include <fstream>
#include<string>
#include <iostream>
#include <cstdlib> //needed for exit function
using namespace std;
//function prototype
int fileSum(string filename);
int main()
{
string filename;
cout << "Enter the name of the input file: ";
cin >> filename;
cout << "Sum: " << fileSum(filename) << endl;
system("pause");
return 0;
}
/*The function fileSum that takes the string filename and
count the sum of the values and returns the sum of the values*/
int fileSum(string filename)
{
//Create a ifstream object
ifstream fin;
//Open a file
fin.open(filename);
//Initialize sum to zero
int sum=0;
//Check if file exist
if(!fin)
{
cout<<"File does not exist ."<<endl;
system("pause");
exit(1);
}
else
{
int value;
//read file until end of file exist
while(fin>>value)
{
sum+=value;
}
}
return sum;
}//end of the fileSum
Explanation:
This is a C++ program that prompts user to enter the name of input file(input.txt in this example) and print the sum of the values in the file to console. If file dosnot exist, then close the program.
Check attachment for sample output screenshot.
