Formatting<span> writes the file system structure to the disk.</span>
The answer is one ☝️ question for the poll of a vote
Answer:
Begin the statement with the proper keyword to start the loop
Explanation:
Given
The code segment
Required
Fix the code
The first line of the code segment is meant to be a for loop, but it does follow the right syntax.
This is so because the for keyword is missing.
The first line should be corrected and replaced with:
for count in range(80):
Hence, option (b) is correct
Answer:
Explanation:
Following are the Semaphores:
Customers: Counts waiting customers;
Barbers: Number of idle barbers (0 or 1)
mutex: Used for mutual exclusion.
Cutting: Ensures that the barber won’t cut another customer’s hair before the previous customer leaves
Shared data variable:
count_cust: Counts waiting customers. ------------copy of customers. As value of semaphores can’t access directly.
// shared data
semaphore customers = 0; semaphore barbers = 0; semaphore cutting = 0; semaphore mutex = 1;
int count_cust= 0;
void barber() {
while(true) { //shop is always open
wait(customers); //sleep when there are no waiting customers
wait(mutex); //mutex for accessing customers1
count_cust= count_cust-1; //customer left
signal(barbers);
signal(mutex);
cut_hair();
}
}
void customer() {
wait(mutex); //mutex for accessing count_cust
if (count_cust< n) {
count_cust= count_cust+1; //new customer
signal(customers); signal(mutex);
wait(barbers); //wait for available barbers get_haircut();
}
else { //do nothing (leave) when all chairs are used. signal(mutex);
}
}
cut_hair(){ waiting(cutting);
}
get_haircut(){
get hair cut for some time; signal(cutting);
}
Answer:
The output to the given code as follows:
Output:
10
100
64
36
16
4
0
4
16
36
64
Explanation:
In the given java code, an integer variable "i" and an array number is defined, which size is 10, in the next step two for loop is declared, that can be described as follows:
- In the first loop, array use loop variable "i" use, which minus the value of 5 and multiplies by 2, and it will calculate the square of that number.
- In the next step, a for loop is declared, that prints these array number variable square.
