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(Written in C++) Your assignment is to generate an HTML multiplication table with dimensions specified by...

(Written in C++) Your assignment is to generate an HTML multiplication table with dimensions specified by the user. You will ask the user for the number of rows then number of columns, and generate an HTML table of the appropriate size. The top left cell should contain the result of 1 x 1, and the bottom right cell should contain the result of num_rows x num_cols.

Each row and column may be an integer value between 1 and 12 inclusive (1 or 12 are valid). If the user does not specify a value in this range or a value that is not a valid integer, prompt the user again until you receive a valid value. You should not simply exit the program if invalid input is given.

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Answer #1

Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

Note: You can add more formatting options like background color, cell width, styling etc as you wish. Right now, this will just create a basic html file with a table containing multiplication table of specified number of rows and columns.

#include<iostream>

#include<fstream>

using namespace std;

//helper method to get a valid integer between 1 and 12

int getInput(string prompt){

                int value=0;

                //looping until user enter valid value

                while(value<1 || value>12){

                                cout<<prompt;

                                cin>>value;

                                //checking if read value is not an integer (reading failed), or value is not in proper range

                                if(cin.fail() || value<1 || value>12){

                                                //clearing input buffer to remove any stray input

                                                cin.clear();

                                                cin.sync();

                                                //displaying error message

                                                cout<<"Error! The value should be between 1 and 12. Try again."<<endl;

                                }

                }

                //returning validated value

                return value;

}

int main(){

                //using the helper method, reading number of rows and columns

                int rows=getInput("Please enter the number of rows: ");

                int cols=getInput("Please enter the number of columns: ");

               

                //creating a file named output.html, change file name if you want

                ofstream outFile("output.html");

               

                //writing html opening tags to set up an html page with a table

                //using a 1px border and occuppying half of the window (50%)

                outFile<<"<html>\n<body>\n<table border=\"1\" style=\"width:50%\">\n";

                //looping through each row value

                for(int i=1;i<=rows;i++){

                                //writing row opening tag

                                outFile<<"<tr>";

                                //looping through each column

                                for(int j=1;j<=cols;j++){

                                                //finding current value

                                                int value=i*j;

                                                //writing to the file within a pair of <td> </td> tags

                                                outFile<<"<td>"<<value<<"</td> ";

                                }

                                //closing the row tag

                                outFile<<"</tr>\n";

                }

                //closing the table, body and html tags

                outFile<<"</table>\n</body>\n</html>";

                //closing file, saving changes, alerting user

                outFile.close();

                cout<<"The resultant table has been stored in output.html, please check"<<endl;

                return 0;

}

/*OUTPUT*/

Please enter the number of rows: -2

Error! The value should be between 1 and 12. Try again.

Please enter the number of rows: 0

Error! The value should be between 1 and 12. Try again.

Please enter the number of rows: 5

Please enter the number of columns: 10

The resultant table has been stored in output.html, please check

//output.html generated


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