Not sure what I did wrong...

[ceci]

Hi! I need to create a really simple program where the input is any ol' positive integer and the program outputs something like this:
Input: 5
Output:
_____5
____4
___3
__2
_1

With the underscores being spaces instead and the amount of spaces corresponding to the particular number.

When I run the code I posted below, it has the sequence start at one less than the input (so, 4 in the example) and only displayed a few of the descending numbers but not all (so, they didn't go all the way down to 1). I was wondering how I could fix this. If anyone is willing to help, it is greatly appreciated! Thank you!

//Declare Variables
    int number; //user inputs a number
    
    
//Prompt User
    cout<<"Enter a Positive Integer and The Program Will "
            "Output a Particular Pattern Accordingly."<<endl;
    cin>>number;

//Produce Pattern that Depends on Input Integer
int temp = number;

	for(int i = 0 ; i <= number ; i++)
	{
		for(int j = 0 ; j <= temp ; j++)
		{
			cout<<" ";
                        
		}
		number--;
                temp--;
                cout<<number;
		cout<<endl;
	}
    

[Yay295]

for ( int i = 0 ; i < number ; ++i )
    cout << '_';

cout << number << '\n';

[Unvanish]

I worked this out. I added a underscore corresponding to the value "i" was, and used ostringstream to convert "i" to a string. Hope this helps!

#include <iostream>
#include <string>
#include <sstream>

using namespace std;

int main()
{
    int number;

    cout << "Enter a positive integer and the program will output a particular pattern accordingly.\n";
    cin >> number;

    int temp = number;

    for (int i = number; i >= 0; i--)
    {
        string s = "";

        for (int j = 0; j < i; j++)
            s.append("_");

        std::ostringstream convert;
        convert << i;

        string result = convert.str();
        s.append(result);
        cout << s << endl;
    }
}

[ceci]

Thank you so much, Unvanish! :D

However, I haven't learned about ostringstream and converting to a string so do you mind explaining it to me or maybe showing another way to make this program without it? Sorry >__<"

[Unvanish]

Sure thing ceci! I have some examples that I hope will help you understand a little ostringstream better. You should really look more into ostringstream and istringstream, it will help you in the long run!

ostringstream is part of the c++ stream library(sstream to be exact). It allows you to convert a number to a string in two steps(see main()).

1. Outputting the value of the number to the stream( << operator)
2. Getting the string with the contents of the stream(str())

main_error() is a representation of something I did before while working on this initially. I included this function to show what you shouldn't do in this situation.

#include <iostream>
#include <string>
#include <sstream>

using namespace std;

int main_error()
{
    int Num = 123; //Define variable
    string sNum = (const char*) Num; //Add a cast to Num.
    std::cout << sNum << endl; //The program will crash because it is a int is incompatible to a char*.
}

int main()
{
    int Num = 123;

    std::ostringstream convert; //ostringstream allows to convert int to strings.

    convert << Num; //Insert Num to be converted into a string. Like cout, we use the << stream operator.

    string Result = convert.str(); //str() returns the string.
    std::cout << Result;
}

Reference:
http://www.cplusplus.com/articles/D9j2Nwbp/

[ceci]

I'll be looking more into ostringstream and istringstream, then! Thanks so much, Unvanish--you were very helpful! :D