In the following declaration: string *var1, var2; O var1 is a pointer to a string, var2 is a string O var2 is a pointer to a string, var1 is a string O both var1 and var2 are pointers to string types O None of the answers are correct.
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- Write the countVowels function which counts the number of vowels using the string class as follows: int countVowels(const string& s) Write a test program that prompts the user to enter a string, invokes the countVowels function and displays the total number of vowels in the string.char lastChar(const char *str){ char last; //loop over the string and go uptill end of the string \0 while(*str !='\0'){ str++; // increment pointer last = *str; //store the current character to the last variable } return last; //last character is returned}Write a function that reverses a string. The header of the function is: def reverse(s):Write a test program that prompts the user to enter a string, invokes the reverse function, and displays the reversed string.
- // write a function that takes the input string and reverses it// example// argument: Hello// return: olleHfunction reverseThisString(string){ } // write a function that takes the input string and switches all uppercase characters to lowercase and lowercase charcaters to uppercase// example:// argument: Hello World// return: hELLO wORLDfunction swapCase(string) { } //convert array of numbers from farenheit to celcius// example:// argument: [23, 32, 41, 50, 59]// return: [-5, 0, 5, 10, 15]// hint: use Array.mapfunction toCelcius(array){ } //write a function that takes an input array and returns an array of booleans (>=75) or fail (<75)// example:// argument: [20, 30, 50, 80, 90, 100]// return: [false, false, false, true, true, true]// hint: use Array.mapfunction passOrFail(array){ } //write code that loops through the two variables returns an array ['2 is zwei', '3 is drei', '4 is vier', '5 is fünf', '6 is sechs']// example:// return: ['2 is zwei', '3 is drei', '4 is vier', '5 is…def swap_text(text): Backstory: Luffy wants to organize a surprise party for his friend Zoro and he wants to send a message to his friends, but he wants to encrypt the message so that Zoro cannot easily read it. The message is encrypted by exchanging pairs of characters. Description: This function gets a text (string) and creates a new text by swapping each pair of characters, and returns a string with the modified text. For example, suppose the text has 6 characters, then it swaps the first with the second, the third with the fourth and the fifth with the sixth character. Parameters: text is a string (its length could be 0)Return value: A string that is generated by swapping pairs of characters. Note that if the Examples: swap_text ("hello") swap_text ("Party for Zoro!") swap_text ("") def which_day(numbers): → 'ehllo'→ 'aPtr yof roZor!' → '' length of the text is odd, the last character remains in the same position.countVowels.py● Using import sys : Create a python program called countVowels.py that has a function that takes in a stringthen prints the number of unique vowels in the string (regardless of it being upperor lower case).● For example:○ The argument “swEet” should print 1○ The argument “AaaaeeE” should print 2
- Exercise2: Thestrcmp(string1,string2)function comparesstring1to string2. It is a value returning function that returns a negative integer if string1 < string2, 0 if string1 == string2, and a positive integer if string1 > string2. Write a program that reads two names (last name first followed by a comma followed by the first name) and then prints them in alphabetical order. The two names should be stored in separate character arrays holding a maximum of 25 characters each. Use the strcmp() func- tion to make the comparison of the two names. Remember that 'a' < 'b', 'b' < 'c', etc. Be sure to include the proper header file to use strcmp(). Sample Run 1: Please input the first name Brown, George Please input the second name Adams, Sally The names are as follows: Adams, SallyBrown, George Sample Run 2: Please input the first name Brown, George Please input the second name Brown, George The names are as follows: Brown, GeorgeBrown, GeorgeThe names are the samepairRemoval(String,String,String) this is a public static function that takes three strings as arguments and returns a string. You will be given three strings, the first string is a sentence as text that contains at least one occurrence of left pattern and right pattern. The second and third arguments of the function are the left and right patterns respectively. Left pattern and right pattern are single characters strings that you are attempting to remove from the string. Your goal is to remove only the patterns when left pattern has an equal number of corresponding right patterns.in c language Write a program which performs the following actions: Write the header of the C program Write the beginning of the main function Initialize a string called first_string with the constant value "C programming is nice**" using a string pointers Initialize a string called second_string with the constant value "C language is difficult" using a string pointer Display first_string and second_string in two consecutive lines Display a message that shows if the two strings have the same length (hint: use sizeof). Assume now that both strings have the same size. Write only three statements to swap the two strings’ contents (swap means the content of the first string becomes the content of the second string and vice-versa) Display again the two strings to check whether they have been swapped Write the correct symbol to close the main function
- String Pair // Problem Description // One person hands over the list of digits to Mr. String, But Mr. String understands only strings. Within strings also he understands only vowels. Mr. String needs your help to find the total number of pairs which add up to a certain digit D. // The rules to calculate digit D are as follow // Take all digits and convert them into their textual representation // Next, sum up the number of vowels i.e. {a, e, i, o, u} from all textual representation // This sum is digit D // Now, once digit D is known find out all unordered pairs of numbers in input whose sum is equal to D. Refer example section for better understanding. // Constraints // 1 <= N <= 100 // 1 <= value of each element in second line of input <= 100 // Number 100, if and when it appears in input should be converted to textual representation as hundred and not as one hundred. Hence number…String Manipulation In this question, you will be implementing the following functions int findChar(char * str, char c); Searches for the character c in the string str and returns the index of the character in the string. If the character does not exist, returns -1 int replaceChar(char * str, char c1, char c2); Searches for the character c1 in the string str and if found, replace it with c2.The function returns the number of replacements it has performed. If the character does not exist, returns 0. int removeChar(char * str1, char * str2, char c); Creates a copy of str1 into str2 except for the character c that should be replaced with ‘*’ For example, if str1=”Hello World” and c=’l’ then the function should make str2=”He**o Wor*d” int isPalindrome(char * str) Checks to see if a string is Palindrome(reversible). If it is, returns 1, otherwise returns 0. A palindrome string reads similarly from left to right and from right to left like madam, level, radar, etc. int reverseString(char…Alternate Character DisplayWrite a method that accepts a String object as an argument and then returns the alternate characters as substring starting from index 0. For instance, if the string argument passed is “GREAT”, the method should return “GET”. Demonstrate the method in a program that asks the user to input a string and then passes it to the method.