I've been working on this program and can't seem to understand how to print an output file of the calendar of July. Is there any help I can get?
This is the code:
//----------------------------------------------------------------------
//
// This lab exercise is to practice rand(), srand() and
// output formating with help of <iomanip>. It also practices
// file input and output.
//
// Add a text data file to your project called "lab_4_data.txt". Put the following
// numbers in it: "23 456 3000 578 9876".
//
// You do not need to create an output file, because the file open call
// will do this for you.
//
// Compile and run your program. When everything is fine,
// print your .cpp file and turn it to me or the TA.
// **********************************************************************
#include <iostream>
#include <fstream>
#include <string>
#include <cmath>
#include <cstdlib>
#include <iomanip>
using namespace std;
void showMenu();
int main( )
{
//file declaration
ifstream inputSeedsFile; //input file with random seeds
ofstream outTableFile, //output file to store square root and logarithm table
outCalendarFile; //output file to store the calendar
//variable declarations
unsigned seed; //random seed
int x, totalNumber; //x holds int values, totalNumbers holds the number of int values
double sqrtResult, //store square roots
logResult; //store base-10 logrithmic values
int choice; //store choice value (1, 2, 0r 3)
char option; //store option value (y/n)
int dice1, dice2, //dice numbers
sum, guess; //the sum of two dices and the guessed sum
//open the input file
inputSeedsFile.open("lab_10_data.txt");
//open the output files
outTableFile.open("lab_10_output.txt");
outCalendarFile.open("Lab_10_outputCalendar.txt");
while ( true )
{
showMenu(); //show menu
cin>>choice; //get the user's choice
//build a log and base-10 logrithmic table
if (choice == 1)
{
cout<<"How many numbers do you want to play? "<<endl;
cin>>totalNumber;
//totalNumber shall be >= 1
if (totalNumber < 1)
{
cout<<"The total number must be greater or equal to 1. "<<endl;
}
//build the table when totalNumber >= 1
else
{
//prepare the outfile format
//set decimal format with 4 decimal digits
outTableFile<<setprecision(4)<<fixed<<showpoint;
//output the table to the output file
//print table head with three column of width 10 each
outTableFile<<setw(10)<<right<<"input"<<setw(20)<<right<<"square root"
<<setw(20)<<right<<"base-10 logarithm"<<endl;
outTableFile<<"---------------------------------------------------------------"<<endl;
//use a for-loop to build a table, one row at a time/iteration
for (int i=1; i<= totalNumber; i++)
{
//output one row to the output file
outTableFile<< setw(10)<<right<<i //print column 1
<<setw(20)<<right<<sqrt(static_cast<double>(i)) //print column 2
<<setw(20)<<right<<log10(static_cast<double>(i))<<endl; //print column 3
}
cout<<"The table is finished ..................."<<endl<<endl;
outTableFile<<"The table is finished .................."<<endl<<endl;
}
}
//The program rolls two dices, yielding two integers between 1 and 6.
//Ask the user to guess the sum of the two dices.
if (choice == 2)
{
//ask for a random seed
cout<<"Get me a random seed from the input file ....."<<endl;
inputSeedsFile>>seed;
//set the random seed
srand(seed);
//roll the first dice
dice1 = 1 + rand()%6;
cout<<"Rolled dice one ........................"<<endl;
//roll the second dice
dice2 = 1 + rand()%6;
cout<<"Rolled dice two ........................"<<endl;
//calculate the sum of two dices
sum = dice1 + dice2;
//Ask the user to guess the sum
cout<<"Guess the sum of the two dice ==> "<<endl;
cin>>guess;
if (guess == sum)
{
cout<<"You are a winner!" <<endl
<<"Dice one "<<dice1 <<" + dice two " <<dice2 <<" is "
<< "you guessed " <<guess<<endl;
}
else
{
cout<<"You are a loser!"<<endl
<<"Dice one "<<dice1 <<" + dice two " <<dice2 <<" is not "
<< "you guessed " <<guess<<endl;
}
}
/*******************************************************************************************
You need to print into the output file "outCalendar.txt"
a calendar of June, July and August 2008.
You shall format the result for month well so that it looks like a real calendar table.
You must use <iomanip>
********************************************************************************************/
if (choice == 3 )
{
cout<<" This part is for you to complete. "
<<"You need to print into the output file (outCalendar.txt) a calendar of June,"
<<"July and August 2008."<<endl;
}
cout<<"Do you want to play again (y/n)? ";
cin>>option;
if (option !='y')
{
cout<<"Bye bye!"<<endl<<endl;
break;
}
}
//close files
inputSeedsFile.close( ); //close randomSeeds.txt
outTableFile.close( ); //close outTable.txt
outCalendarFile.close( ); //close outputCalendat.txt
//complete the work
return 0;
}
void showMenu()
{
cout<<"************************************************\n"
<<"Enter 1 to build a square root, log10 table \n"
<<"Enter 2 to play rolling two dices \n"
<<"Enter 3 to print a calendar for 2008 \n"
<<"What is your choice ==> ";
return;
}
