Answer: In operating system a code segment which accesses some shared variables or resources one at a time atomically such other no other code or process is accessing that resource or variable at the same time.
Entry section code block allows the access to the shared resource or variable and exit section code signals the termination from access to the shared resource or variable.
Explanation:
Entry and exit section codes needs to check certain properties before allowing the access and removal of access to a particular code segment.
These conditions are:
1. Bounded waiting.
2. Mutual exclusion.
3. checking thread execution status to allows other threads to enter the critical section (CS).
Answer:
This code will print: 4
Explanation:
Following is the step-by-step explanation for the given code:
- Given is the array of data type double named myList, it has entries, 1, 5, 5, 5,5, 1:
double[] myList = {1, 5, 5, 5, 5, 1};
- Now the first element of the array (1) with index 0 will be stored in the variable max (data type double).
double max = myList[0];
- A variable indexOfMax having datatype int will be initiated as 0.
int indexOfMax = 0;
- Now for loop will be used to find the maximum number of the array. The variable i will be put as index for each element to compare with first element. If the checked element is greater than or equal to the integer in max, it will be replaced. So at the end the variable max will have value 5 that will be at index i = 4.
for (int i = 1; i < myList.length; i++)
{ if (myList[i] >= max)
{ max = myList[i];
- Now the variable i that is the index for max value will be stored in the variable indexOfMax (indexOfMax = 4).
indexOfMax = i; }}
- At end the value stored in variable indexOfMax will be printed, so 4 will be printed as output.
System.out.println(indexOfMax);
i hope it will help you!
Answer:
#include<iostream>
using namespace std;
//create the exchange function
void exchange(int a, int b){
int temp; //initialize temporary
//swap the variables value
temp=a;
a=b;
b=temp;
//print the output after exchange
cout<<"a is: "<<a<<endl;
cout<<"b is: "<<b<<endl;
}
//main function program start from here
int main(){
//initialization
int a=3, b=6;
exchange(a,b); //calling the function
return 0;
}
Explanation:
Create the function exchange with two integer parameter which takes the value from the calling function.
and then declare the third variable temp with is used for swapping the value between two variables.
first store the value of 'a' in the temp and then assign the 'b' value to 'a' and then, assign the temp value to b.
for example;
a=2, b=9
temp=2;
a=9;
b=2;
So, the values are swap.
and then print the swap values.
Create the main function and define the input a and b with values.
Then, calling the exchange function with two arguments.
Explanation:
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