This problem comes from Introduction to C++ Programming and Data Structures, 4th Edition (invalid_argument ) Listing 6.18 gives the hex2Dec(const string & hexString) function that returns a decimal number from a hex string. Implement the hex2Dec function to throw a invalid_argument exception if the string is not a hex string. Write a test program that prompts the user to enter a hex number as a string and display the number in decimal. If the function throws an exception, display "Not a hex number".

Modify the swap_string function in this task6.c to swap two strings.  task6.c Swapping string Only modify swap_string() function and swap_string() call in the main, nothing else should be changed. */ #include <stdio.h> #include <string.h> void swap_string(char *s1, char *s2){ char *tmp = s1; s1=s2; s2=tmp; return; } int main() { char *string1 = "UNIX rules!"; char *string2 = "Windows drools!"; swap_string(string1, string2); printf("String 1: %s\n", string1); printf("String 2: %s\n", string2); return0; }

Implement the following function: Code should be written in python.

2. count_fred_and_ted Given a list of strings called names , count up how many of those names are either "fred" or "ted", and return the count. Sample calls should look like: >>> count_fred_and_ted(["sarah", "bimmy", "fred", "eliza", "ted", "ted"]) 3 >> count_fred_and_ted(["sarah", "bimmy", "bimmy", "bimmy", "bimmy"]) >>> count_fred_and_ted(["fred", "ted", "fred", "ted"]) 4 >>> count_fred_and_ted([])

your goal is to modify your assignment 6 program to allow the user to pick up a random item and display a sorted list of the contents of the knap sack. note: if you use the built in c++, the most you can make on this assignment is 4 out of 10. you are expected to right your own sort based on one of the algorithms covered in class. your program should have the following: • the name of the program should be assignment 6. • 3 comment lines (description of the program, author, and date). • modify your assignment 5 program to do the following: o display a menu (use a switch statement to implement the menu) of actions ▪ attack: • for now, just display that the user chose to attack ▪ pick up item: • randomly add one of 6 items to an array named knapsack o you get to choose the item names • display which item the user picked up ▪ add an option to the main switch statement: display knap sack contents • the contents of the knap sack must be sorted The knapsack items are bananas, lays,…

PLEASE DO NOT USE BUILT IN FILES OR FUNCTIONS! Write a program in c++ and make sure it works, that reads a list of students (first names only) from a file. It is possible for the names tobe in unsorted order in the file but they have to be placed in sorted order within the linked list.The program should use a doubly linked list.Each node in the doubly linked list should have the student’s name, a pointer to the next student, and apointer to the previous student. Here is a sample visual. The head points to the beginning of the list. Thetail points to the end of the list.When inserting consider all the following conditions:if(!head){ //no other nodes}else if (strcmp(data, head->name)<0){ //smaller than head}else if (strcmp(data, tail->name)>0){ //larger than tail}else{ //somewhere in the middle}               When deleting a student consider all the following conditions:student may be at the head, the tail or in the middleBelow, you will find a sample of what the…

in the C++ version please suppose to have a score corresponding with probabilities at the end and do not use the count[] function. Please explain the detail when coding. DO NOT USE ARRAY. The game of Pig The game of Pig is a dice game with simple rules: Two players race to reach 100 points. Each turn, a player repeatedly rolls a die until either a 1 ("pig") is rolled or the player holds and scores the sum of the rolls (i.e. the turn total). At any time during a player's turn, the player is faced with two decisions: roll - if the player rolls 1: the player scores nothing and it becomes the opponents turn. 2 - 6: the number is added to the player's turn total and the player's turn continues. hold - The turn total is added to the player's score and it becomes the opponent's turn. This game is a game of probability. Players can use their knowledge of probabilities to make an educated game decision.   Assignment specifications Hold-at-20 means that the player will choose to roll…

Write in c++ please

Write in c++ please

In C++ Develop a simple spell checker and word suggestion program using Hashing. A dictionary of words should be given as a first argument (filename) in the program. This input file is the simple text file "Dictionary.txt", where each line is a word (see Files section).  The program must ask the user to give a word. (case 1) The program must respond with “True” if the word exists in the dictionary, and must suggest words (from Dictionary) starting with the same first two letters. At the end of each suggestion the exec. time (in micro-sec) must be displayed (see "TimeInterval.h" in Files section). (case 2) If the input word does not exist in Dictionary due to user misspelling, and considering the first letter is correct, the program should return a recommended word from the dictionary (only one word). For example, instead of the word sentence,  the user enters snetence, setnence, sentens, or setence, etc; the program should return: "do you mean sentence?" If "no", return "false". If…