Concept explainers
The Standard Template Library (STL) includes the collection of data types and
- A special data type called vector is offered by STL which is useful for standard arrays.
A vector stores the elements or values in sequence order and the values are stored in continuous memory locations.
- The subscript operator “[]” in the vector helps to read the content of each element.
Syntax:
Syntax to define a vector is as follows:
//Declaring an empty vector
vector <data_type> name_of_vector;
In the above line,
- The keyword “vector” represents the vector declaration.
- The “<data_type>” represents the type of data the vector can hold; the data types such as “int”, “float”, “string”, “char”, and “double”.
- The “name_of_vector” represents the name of the vector.
Storing values in a vector:
To store a value in a vector, a special member function called “push_back()” has been used.
Consider the following format to store value in a vector:
//store the value in vector
Name_of_vector.push_back(element_for_insertion);
In the above line,
- The “Name_of_vector” represents the vector name.
- The “Push_back()” is a member function which is used to store values in a vector.
- The “element-for-insertion” is the parameter which holds the value to be stored in the vector.
Want to see the full answer?
Check out a sample textbook solutionChapter 7 Solutions
Starting Out with C++ from Control Structures to Objects, Student Value Edition plus MyProgrammingLab with Pearson eText -- Access Card Package (8th Edition)
- Question2: Define an integer vector and ask the user to give you values for the vector. because you used a vector, so you don't need to know the size. user should be able to enter a number until he wants(you can use while loop for termination. for example if the user enters any negative number, but until he enters a positive number, your program should read and push it inside of the vector). then calculate the average of all numbers he entered. find minimum number in the vector find maximum number in the vector find size of the vector C++ languagearrow_forwardWhat are values of vector "vec", if QUANTILE function returns following values? > quantile (vec) 0% 25% 50% 75% 100% 0.0 12.5 25.0 37.5 50.0arrow_forwardAssume numbers is a vector that contains these integers:2 4 6 8 10Then the following code executes:numbers. resize (9) :numbers. resize (11, 5) ;What does the vector contain now?O 11 1111 11 11 0 0 0 0 2 4 6 8 10000002468 10 5 502 4 6 8 10 0 0 0 0 11 11 11 11 1105500002468 100246810 000055Assume vec1 is a vector that contains these integers:10 20 30 40 50 60 70 80 90 100And vec2 is a vector that contains these integers3 6 9 12 15Then the following code executes:vecl.resize(7):vecl.swap (vec2) ;What do the vectors contain now?Cvec1 contains 3 6 9 12 15vec2 contains 10 20 30 40 50 60 70vec1 contains 3 6 9 12 15 0 0Ovec2 contains 10 20 30 40 50 60 70vec1 contains 3 6 9 12 15O vec2 contains 50 60 70 80 90 100vec1 contains 0 0 3 6 9 12 15O vec2 contains 50 60 70 80 90 100This code creates a compiler error.arrow_forward
- 50. Create a vector variable vec; it can have any length. Then, write assignment statements that would store the first half of the vector in one variable and the second half in another. Make sure that your assignment statements are general, and work whether vec has an even or odd number of elements (Hint: use a rounding function such as fix).arrow_forwardWrite a program that lets the user enter the total rainfall for each of 12 months into a vector of doubles. The program will also have a vector of 12 strings to hold the names of the months. The program should calculate and display the total rainfall for the year, the average monthly rainfall, and the months with the highest and lowest amounts. Part 1 Write main(). In main do the following:(a) Declare a vector of doubles and a vector of strings.Suggested variable name for vector of doubles is rainfall. Suggested variable name for vector of strings is monthNames(b) Store the months in your string vector in the following order: January, February, March, April, May, June, July, August, September, October, November, December. Make sure you write out the month names fully (do not use abbreviations).(c) Get input for 12 doubles from the user to place into the vector of doubles. Each double will be the amount of rain for the month parallel to the string vector of month names.(d) Display the…arrow_forwardVector? How Will You Check If An Element 25 Is Present In Aarrow_forward
- Write a program that lets the user enter the total rainfall for each of 12 months into a vector of doubles. The program will also have a vector of 12 strings to hold the names of the months. The program should calculate and display the total rainfall for the year, the average monthly rainfall, and the months with the highest and lowest amounts. Part 1 Write main(). In main do the following:(a) Declare a vector of doubles and a vector of strings.Suggested variable name for vector of doubles is rainfall. Suggested variable name for vector of strings is monthNames(b) Store the months in your string vector in the following order: January, February, March, April, May, June, July, August, September, October, November, December. Make sure you write out the month names fully (do not use abbreviations).(c) Get input for 12 doubles from the user to place into the vector of doubles. Each double will be the amount of rain for the month parallel to the string vector of month names.(d) Display the…arrow_forwardAssume numbers is a vector that contains these integers: 2 4 6 8 10 Then the following code executes: numbers.resize (9) ; numbers.resize (11, 5) ; What does the vector contain now? 11 11 11 11 11 0 0 0 0 2 4 6 8 10 0 0 0 0 2 4 6 8 10 5 5 2 4 6 8 10 0 0 0 0 11 11 11 11 11 5 5 0 0 0 0 2 4 6 8 10 O 2 4 6 8 10 0 0 0 0 5 5 Assume vec1 is a vector that contains these integers: 10 20 30 40 50 60 70 80 90 100 And vec2 is a vector that contains these integers: 3 6 9 12 15 Then the following code executes: vec1.resize (7); vec1.swap (vec2) ; What do the vectors contain now? vec1 contains 3 6 9 12 15 vec2 contains 10 20 30 40 50 60 70 vec1 contains 3 6 9 12 15 0 0 vec2 contains 10 20 30 40 50 60 70 vec1 contains 3 6 9 12 15 vec2 contains 50 60 70 80 90 100 vec1 contains 0 0 3 6 9 12 15 vec2 contains 50 60 70 80 90 100 O This code creates a compiler error.arrow_forward: Write down a code which detects the even numbers in the row vector containing the digits of your student number in order and converts even numbers to odd numbers and displays the modified output vector.arrow_forward
- Write a function that displays an n-by-n matrix using the following header: void printMatrix(int n)Each element is 0 or 1, which is generated randomly. Write a test program that prompts the user to enter n and displays an n-by-n matrix.arrow_forwardsame) with eleven elements that are all 4. 8. Create a vector, name it Afirst, that has 13 elements in which the first is 3, the increment is 4 and the last element is 51. Then, using the colon symbol, create a new vector, call it Asecond, that has seven elements. The first four elements are the first four elements of the vector Afirst, and the last three are the last three elements of the vector Afirst. Using the colon symbol, create a 3x5 matrix (assign it to a variable namedarrow_forwardQ/The command that used to multiply the vector v=[ 1, 2, 3]; by vector u=[4; 5; 6] is v.*u O b) False O a) Truearrow_forward
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill EducationStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningProgrammable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education