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/*

* CECS 2203, Computer Programming I Lab

* Winter 2022, Sec. 07

* Date: December 19, 2022

* Topic: Lab 4 - Christmas Tree

* File name: lab04.cpp

* Name:

*/

/*

* This program prompts the user for the number of lines in a

* Christmas tree, and then prints the tree. Use the algorithm

* developed in the previous course meeting to implement a

* solution to the problem.

*/

// write the required include and using statements

#include

using namespace std;

// declare a method named printSpaces which has no return

// value and receives an integer as parameter

void printSpaces(int);

// declare a method named printDashes which has no return

// value and receives an integer as parameter

void printDashes(int);

// declare a method named spacesBefore which returns an

// integer and has two integers as parameters

int spacesBefore(int,int);

// declare a method named spacesMiddle which returns an

// integer and has one integer as parameter

int spacesMiddle(int);

// Declare a method named computeDashes which returns an

// integer and has an integer as parameter

int computeDashes(int);

// Declare a method named printTree which receives an

// integer as parameter and has no return value

void printTree(int,int);

// Declare a method named personalInfo which has no parameters or return value

void personalInfo();

int main(){

// declare an integer variable named rows and initialize to 0

int rows=0,row=0;

// prompt the user for the number of rows using the phrase

// "Enter the number of rows for the Christmas tree: "

cout

// store the value in the appropriate variable

cin >>rows;

cout

// call the printTree method

printTree(rows,row);

// call the personalInfo method

personalInfo();

//system("pause"); // For Visual Studio only!

return 0;

}

// The printSpaces method has no return value and receives an integer

// as parameter. This method prints the number of spaces indicated by

// the value of the parameter. No variables are declared in this method.

void printSpaces(int row){

while(row>0){

cout

row--;

}

}

// The printDashes method has no return value and receives an integer

// as parameter. This method prints the number of dashes indicated by

// the value of the parameter. No variables are declared in this method.

void printDashes(int){

}

// The spacesBefore function receives 2 integers as parameters and returns

// an integer value. This method implements the algorithm discussed in

// class to compute the number of spaces before the star or bar and returns

// the value. No variables are declared in this method.

int spacesBefore(int rows,int middle){

return rows-middle-1;

}

// The spacesMiddle function receives 1 integer as parameter and returns

// an integer value. This method implements the algorithm discussed

// in class to compute the number of spaces between stars and returns the

// value. No variables are declared in this method.

int spacesMiddle(int rows){

return 2*rows-1;

}

// The computeDashes function receives 1 integer as parameter and returns

// an integer value. This method implements the algorithm discussed in

// class to compute the number of dashes and returns the value.

// No variables are declared in this method.

int computeDashes(int rows){

return 2*rows - 1;

}

// The printTree method has no return value and receives an integer

// as parameter. This method implements the algorithm discussed in class

// to print the Christmas tree. No variables are declared in this method.

void printTree(int rows,int row){

while(row

printSpaces(spacesBefore(rows,row));

cout

if(spacesMiddle(row)

cout

}

else{

printSpaces(spacesMiddle(row));

cout

cout

}

row++;

}

}

// The personalInfo method prints a statement with your personal information using

// the phrase "***** Program developed by [YOUR NAME], ID# [YOUR ID NUMBER] *****"

// where the square brackets and the text within is substituted with your personal

// information. Make sure to add a blank line before and after the phrase is printed.

void personalInfo(){

cout

}

note: i don't know how to do the rest of the three

Christmas Tree Problem -Need to know total number of rows, rows -prompt the user -develop a for - call method to compute spaces before - print the spaces - printstar - condition to continue - if true then compute middle spaces - print the spaces - print the star - insert new line CRLF - call the method to compute dashes - print the dashes - compute spaces before stand - print the spaces - print the stand nter the number of rows for the Christmas tree: 7 Program developed by, ID - Progxam finished with exit code 0 Press BNTYR to exit console