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(Practice) a. Write a declaration to store the string "This is a test" in an array named strtest. Include the declaration in a
NUMDISPLAY is a named constant for the number 14.
b. Modify the for statement in Exercise 5a to display only the array characters t, e, s, and t.
c. Include the array declaration written in Exercise 5a in a program that uses a cout statement to display characters in the array. For example, the statement cout << strtest; causes the string stored in the strtest array to be displayed. Using this statement requires having the end-of-string marker, \0, as the last character in the array.
d. Repeat Exercise 5a, using a while loop. (Hint: Stop the loop when the \0 escape sequence is detected. The expression while
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Chapter 7 Solutions
C++ for Engineers and Scientists
- (JAVA) Create a two-dimensional array of type double to contain the three different SD Marks (JD521, PRG521, and IP521) for six different students. A single array of type String must be used to store the student names (Maxwell, Carl, Gerhard, Paul, James, and Cena). Allow a user to enter in a number, ranging from 1 to 6, which will represent the student position in the table MCSD max and present the marks for each respecting module. The program can only stop when the user enter a number greater than 6. Printout the student name including the JD521, PRG521, and IP521 max, the total of marks and the average of all marks. Use a condition statement to decide that the student has passed or not (Pass rate is 70). The programming language is java Student name JD521 PRG521 IPG521 Maxwell 80 65 70 Carl 95 70 65 Gerhard 87 80 73 Paul 65 45 60 James 45 87 65arrow_forward(In Python) Skeleton code for the function count_evens is below. The function takes in an array of numbers and returns the number of even numbers in the array.arrow_forward(JS)Write a function named "tweets" that takes a string as a parameter. If a message can hold at most 280 characters, calculate the smallest number of messages needed to hold all of the text in the input. The function should return the number it calculated.arrow_forward
- (IN PYTHON) Problem 1 Write a function word_count() that performs the following actions: Opens a file called “novel.txt”. You can assume that the file exists and is located in the same directory as your code file. Reads in the contents of the file, and stores it in a variable called text. Uses the split() function to obtain a list containing all of the individual words in text. For details on how to use split(), you can consult this site: https://www.w3schools.com/python/ref_string_split.asp For this question, assume that all words will be separated by spaces. Returns the number of words in the lisarrow_forward- in this exercise, please do not include and use string class. The function is using only array notation and manipulation.- string functions such as strlen is not allowed.- it should not have multiple return statements in the same function- there should be no global variable.- the function should not traverse the arrays more than once (e.g. looping through the array once only) A C++ PROGRAM named "changeCase" that takes an array of characters terminating by NULL character (C-string) and a boolean flag of toUpper. If the toUpper flag is true, it will go through the array and convert all lowercase characters to uppercase. Otherwise, it will convert all uppercase to lowercase. For example, if the array is {'H', 'e', 'l', 'l', 'o', '\0'} and the flag is true, then the array will become{'H', 'E', 'L', 'L', 'O', '\0'}. And if the flag is false, the array will become{'h', 'e', 'l', 'l', 'o', '\0'}arrow_forward(c++)1. Body Mass Index (BMI) is a measure of health on weight. It can be calculated by taking your weight in kilograms and dividing by the square of your height in meters. Write a program that lets a teacher to calculate the BMI of 20 students. The program should use three one dimensional arrays named studWeight that holds the weight (in kilograms), studHeight that holds the height (in meters) and studBMI that holds the calculated BMI for each student. The program contains the following functions: a) readData: This function receives the studWeight and studHeight arrays from the main function. It reads the weight and height for all the students and stored them in the studWeight and studHeight arrays, respectively. b) calBMI: This function receives one element of the studWeight and studHeight arrays. It calculates the BMI of each student based on her/his weight and height, and then store the BMI in the studBMI array. c) display: This function displays the BMI of the students.arrow_forward
- (Design/Problem Solving) Create an algorithm for a program that reads a string with a maximum length of 30 from the keyboard[1]. The algorithm should then copy the characters from that input string into a second character array (in order of input). However, only if a character is a vowel (a, e, i, o, u) should it be copied into the second array. Once copied, the algorithm should output the values stored in the second array (in order of input). The algorithm should then count and display the number of times each vowel appears in the second array. Also, the algorithm should determine and output the index in the second array where each vowel first appeared or display a suitable message if a particular vowel is not in the array at all. Your solution must be modular in design; you should consider in your design the issues of high cohesion and code re-use (refer to the lecture notes for module four, on modular design and programming). (Programming exercise) Implement the…arrow_forward(Check test scores) The answers to a true-false test are as follows: T T F F T. Given a two-dimensional answer array, in which each row corresponds to the answers provided on one test, write a function that accepts the two-dimensional array and number of tests as parameters and returns a one-dimensional array containing the grades for each test. (Each question is worth 5 points so that the maximum possible grade is 25.) Test your function with the following data: int score = 0;arrow_forward(Write a code in C++ Programming language)Use a vector to read 10 integer numbers, each of which is between 1 and 50. Begin with an empty vector and use its push_back function to add each unique value to the vector. As each number is read, validate it and store it in the array only if it is not a duplicate of a number already read. After reading all the values, display only the unique values that the user entered.arrow_forward
- (Adding Large Integers) | In C++, the largest int value is 2147483647. So, an integer larger than this cannot be stored and processed as an integer. Similarly, if the sum or product of two positive integers is greater than 2147483647, the result will be incorrect. One way to store and manipulate large integers is to store each individual digit of the number in an array. Write a program that inputs two positive integers of, at most, 20 digits and outputs the sum of the numbers. If the sum of the numbers has more than 20 digits, output the sum with the message The sum of the numbers overflows. Your program must, at least, contain a function to read and store a number into an array and another function to output the sum of the numbers.(Hint: Read numbers as strings and store the digits of the number in the reverse order.)arrow_forward(Use Python) Use the Design Recipe to write a function bmi_risk which consumes two positive numeric arguments into parameters, bmi and age and returns a string 'Low', 'Medium', or 'High' according to the following table: Under 45 45 or over BMI less than 22 Low Medium BMI 22 or more Medium High For example: Test Result print(bmi_risk(21.5, 44)) Low print(bmi_risk(30, 27)) Medium Include a docstring! Write three assert_equal statements to test your function.arrow_forward(In python) Skeleton code for the function count_evens is below. The function takes in an array of numbers and returns the number of even numbers in the array. a. Use a combination of iteration and conditionals to complete the function below. Hint: the % operator returns the remainder if you divide by a certain number! Example: 11 % 5 =1arrow_forward
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