reverse triangle problem

hi, have this reverse triangle that i cannot completely solve, hope to get some help. here's my code

#include <iostream>
#include <cmath>
using namespace std;

int main()
{
 	int x;	//declare the variable
	int i = 1,j = 1; //declare the variables

	cout<< "Enter a positive odd number: "; //ask user to input how many lines
 	cin>>x;
		for (int i=1;i<=x;i++)
		{
			for(int j=1; j<=i-1;j++)
			{
				cout<<" ";
			}
			for (int j=1; j<=(x-(2*i-2));j++)
			{
				cout<<j%10;
			}
			cout<<endl;
		}	
	
	

return 0; //exit the program
}

say, i put in 13,this will produce,


1234567890123
 12345678901
  123456789
   1234567
    12345
     123
      1

while my teacher demand output like this,


3210987654321
 21098765432
  109876543
   0987654
    98765
     876
      7

my demand it has to be positive and odd number, i still have not made that limitation yet, right now I am focusing on trying produce the desire outcome, therefore I only try positive odd number first.

I also do not know how to fix the excessive spacing at the end. if i omit the "cout<<endl;" it will produce everything in one line, however if i put it in the code, the result is just like that.

thanks for the help guys

Last edited on

Stewbond (2827)

Change:
for (int j=1; j<=(x-(2*i-2));j++)
to
for (int j=(x-(2*i-2)); j>=1;j--)

print (17)

that's only gonna reverse the number, however still not resulting the same results as what my professor demand.

reverse triangle problem

C++

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