Which of the following functions DOES NOT have a memory leak? Select one: void func(string word) { int* ptr = new int[2]; ptr[0] = word.size(); delete ptr; } void func(string word) { int* ptr = new int; *ptr = word.size(); } void func(string word) { int* ptr = NULL; int len = word.size(); ptr = &len; cout << "Length of " << word << " is " << *len << endl; }

Which of the following functions DOES NOT have a memory leak? Select one: void func(string word) { int* ptr = new int[2]; ptr[0] = word.size(); delete ptr; } void func(string word) { int* ptr = new int; ptr = word.size(); } void func(string word) { int ptr = NULL; int len = word.size(); ptr = &len; cout << "Length of " << word << " is " << *len << endl; }

Systems Architecture

7th Edition

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Stephen D. Burd

Chapter3: Data Representation

Section: Chapter Questions

Problem 12VE

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The program will ask the user for their name and employee ID. The ID will be a five-digit number. This will be done in a single function, AskNameId, with bool return, where the name and id are passed as pointers. Read both variables as strings with a getline and convert the id to an int using atoi. Check that the id is not 0. If it is, cout a message to the user for entering an invalid id. Check if the name is an empty string. If it is, cout a message to the user for entering an invalid name. Return a bool, true if name and id are both valid and false if either one is not valid.
Write a function encrypt that receives a message with a string or character vector and returns the message that is encrypted. This function returns the message concealed in the input string that is the first letter of each word in the string (or char vector) and returns a string that contains the first letter of each word in the input string. >> string = ‘This is the third question of final exam’; >> m = encrypt(string) m = ‘Tittqofe’ ( this question's program language is matlab )
a) Write a c++ program which contains a function isPalindrome, the function checks a stringusing pointers whether it is a palindrome or not and based on the decision return Ture orFalse. A string/word that reads the same backwards as forward is known as palindrome.E-g MADAM , POP , BOB etcb) Write a program that takes a char array (char *) that take your name as input, a charpointer point it and convert lower to upper and vice versa.
The following functions are all supposed to count how many times a certain base (represented as a character variable in Python) appears in a dna sequence (represented as a string variable in Python): def count1(dna, base): i = 0 for c in dna: if c == base: i += 1 return i def count2(dna, base): i = 0 for j in range(len(dna)): if dna[j] == base: i += 1 return i def count3(dna, base): match = [c == base for c in dna] return sum(match) def count4(dna, base): return dna.count(base) def count5(dna, base): return len([i for i in range(len(dna)) if dna[i] == base]) def count6(dna,base): return sum(c == base for c in dna) ======================================================================================= Which of them is correct? count 3, and count 6 only count 1, count 3, and count 4 only All of them are correct. count 1, count 3, count 4, and count 6 only
The following functions are all supposed to count how many times a certain base (represented as a character variable in Python) appears in a dna sequence (represented as a string variable in Python): def count1(dna, base): i = 0 for c in dna: if c == base: i += 1 return i def count2(dna, base): i = 0 for j in range(len(dna)): if dna[j] == base: i += 1 return i def count3(dna, base): match = [c == base for c in dna] return sum(match) def count4(dna, base): return dna.count(base) def count5(dna, base): return len([i for i in range(len(dna)) if dna[i] == base]) def count6(dna,base): return sum(c == base for c in dna) Which of the correct functions defined in the above exercise is the fastest? Hint. You will need to generate a very large string to test them on, and the function clock() from the time module to time each function. count2 count3 count5 count4
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In Programming Exercise 13 (Chapter 8), you are asked to write a program to calculate students’ average test scores and their grades. Improve this programming exercise by adding a function to sort students’ names so that students’ data is output into ascending order according to their name. The code is below, is there a way to implement a sort function perhaps? Right now it just outputs as shown in the picture attached. #include <iostream> #include <fstream> #include <string> #include <iomanip> using namespace std; void getData(ifstream& inf, string n[], double tstData[][6], int count); void calculateAverage(double tstData[][6], int count); void calculateGrade(double tstData[][6], char gr[], int count); void print(string n[], double tstData[][6], char gr[], int count); int main() { string names[10]; double testData[10][6]; char grade[10]; ifstream inFile; inFile.open("data.txt"); if (!inFile) { cout…
C++ is my answer correct ? Write a function to convert a given string : Answer: #include <iostream> #include <string> using namespace std; void toUpper(string &str) { for (int i = 0; i < str.length(); i++) { str[i] = toupper(str[i]); } } void toLower(string &str) { for (int i = 0; i < str.length(); i++) { str[i] = tolower(str[i]); } } int main() { string str = "khaled"; toUpper(str); cout << str << endl; str = "MOHAMMED"; toLower(str); cout << str << endl; return 0; } Write a function to calculate the sum of the even number from 1 - 100. Answer: #include <iostream> using namespace std; int sumEven() { int sum = 0; for (int i = 1; i <= 100; i++) { if (i % 2 == 0) { sum += i; } } return sum; } int main() { cout << sumEven() << endl; return 0; }
The following functions are all intended to check whether a string representing a dna sequence contains any characters that are not 'a','c','g','t', 'A', 'C', 'G', or 'T'. At least some of these functions are wrong. Which ones are correct? A) def valid_dna1(dna): for c in dna: if c in 'acgtACGT': return True else: return False B) def valid_dna3(dna): for c in dna: flag = c in 'acgtACGT' return flag C) def valid_dna4(dna): for c in dna: if not c in 'acgtACGT': return False return True -------------------------------------------------------------------------------------------------------------------------------------------------------- valid_dna1 only valid_dna4 only None of them. valid_dna1, and valid_dna4 only
Using the code below, answer the following questions: 1) What are each of the 3 functions responsible for? 2) How many parameters will each function have? 3) What does each function return? 4) How will the program be controlled? 5) What functions will it call? 6) How will it communicate the results with the user? ********************************************* Code starts here ************************************************** Module.py #Defination to sort the list def sort(listNum): sortedList = [] #While loop will run until the listNum don't get null while(len(listNum) != 0 ): #Set the min as first element in list min = listNum[0] #iterate over the list to compare every element with num for ele in listNum: #If element is less than min if ele < min: #Then set min as element min = ele #append the sorted element in list sortedList.append(min) #Remove…
(a) Write a C function readNums() that takes a filename and an integer array, reads the integer numbers in the file and stores into the array, returns the number of numbers stored in the array. Assume that the file only contains integer numbers, and nothing else. Prototype: int readNums(char filename[], int arr[]); (b) Write a C function delWordN() that takes a string and an integer (n) as parameter, removes from the string the words that are n character long. A word is a group of consecutive alphanumeric characters; words are separated by non-alphanumeric characters. ps: please do not copy paste from chegg or anywhere else. write unique code