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xenn [34]
3 years ago
14

Write a C program that creates two threads to run the Fibonacci and the Runner processes. Threads will indicate the start and th

e end of their work by printing statements in the format "Thread K Starting" "Thread K Finished", where K is the thread number. When the threads finish, the parent thread will output the results generated by the two threads by printing in the format, "The sum of first 5 numbers is: 15" and "The first 5 numbers in the Fibonacci sequence are: 0, 1, 1, 2, 3" if the user had input 5 as the value of N.
Computers and Technology
1 answer:
OleMash [197]3 years ago
3 0

Answer:

see explaination

Explanation:

#include <pthread.h>

#include <stdio.h>

int sumOfN = 0;

int arr[1000];

int n;

void * findSumOfN(void *a){

printf("Thread 1 Starting\n");

sumOfN = (n * (n+1)) / 2; //finds sum of first n natural numbers

printf("Thread 1 Finished\n");

pthread_exit(0);

}

void * fibonacci(void *a){

printf("Thread 2 Starting\n");

arr[0]=0;

arr[1]=1;

for(int i=2;i<n;i++) //find fibonacci numbers iteratively

arr[i]=arr[i-1]+arr[i-2];

printf("Thread 2 Finished\n");

pthread_exit(0);

}

int main(void){

printf("Please enter the value of n \n");

scanf("%d", &n);

if (n <= 0)

{

printf("Wrong input ! \n"); //input validation

return 0;

}

pthread_t thread1, thread2;

pthread_create(&thread1,NULL, findSumOfN, NULL); //Create threads

pthread_create(&thread2,NULL, fibonacci, NULL);

pthread_join(thread1,NULL); //Start threads

pthread_join(thread2, NULL);

printf("The sum of first %d numbers is : %d \n",n, sumOfN);

printf("The first %d fibonacci numbers are : \n",n);

for (int i = 0; i < n; ++i)

{

printf("%d ", arr[i]);

}

printf("\n");

return(0);

}

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6 0
3 years ago
CS160 Computer Science I In class Lab 10
lianna [129]

Answer:

The program in Python is as follows:

fname = input("Enter the translation file name: ")

with open(fname) as file_in:

   lines = []

   for line in file_in:

       lines.append(line.rstrip('\n'))

myDict = {}

for i in range(len(lines)):

x = lines[i].split(":")

myDict[x[0].lower()] = x[1].lower()

print("Enter an English word to receive the Spanish translation.\nPress ENTER to quit.")

word = input("Enter an English word: ")

while(True):

if not word:

 break

if word.lower() in myDict:

 print("The Spanish word is ",myDict[word.lower()])

else:  

 print("I don’t have that word in my list.")

word = input("Enter an English word: ")

Explanation:

This prompts the user for file name

fname = input("Enter the translation file name: ")

This opens the file for read operation

with open(fname) as file_in:

This creates an empty list

   lines = []

This reads through the lines of the file

   for line in file_in:

This appends each line as an element of the list

       lines.append(line.rstrip('\n'))

This creates an empty dictionaty

myDict = {}

This iterates through the list

for i in range(len(lines)):

This splits each list element by :

x = lines[i].split(":")

This populates the dictionary with the list elements

myDict[x[0].lower()] = x[1].lower()

This prints an instruction on how to use the program

print("Enter an English word to receive the Spanish translation.\nPress ENTER to quit.")

This prompts the user for an English word

word = input("Enter an English word: ")

This loop is repeated until the user presses the ENTER key

while(True):

If user presses the ENTER key

if not word:

The loop is exited

 break

If otherwise, this checks if the word exists in the dictionary

if word.lower() in myDict:

If yes, this prints the Spanish translation

 print("The Spanish word is ",myDict[word.lower()])

If otherwise,

else:

Print word does not exist

 print("I don’t have that word in my list.")

Prompt the user for another word

word = input("Enter an English word: ")

5 0
2 years ago
CLS
Ainat [17]

Answer:

INPUT "Enter your marks in computer"<u><em>;</em></u>CS

<u><em>IF</em></u> C>40 THEN

PRINT "You are passed. <u><em>"</em></u>

ELSE

PRINT "You are failed."

END <u><em>IF</em></u>

Explanation:

see corrections above.

5 0
3 years ago
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