задача 2

#include <iostream>
#include <fstream>
#include <cmath>
#include <math.h>


using namespace std;

int n;
int c = 1;

int main(int argc, const char * argv[]) {

    cin >> n;
    int b = n - 1;
    for (int i = 1 ; i <= n ; i++ ) {
    	for(int j = 1 ; j <= b ; j++ ) {
    		cout << " ";
    	}
    	for(int d = 1 ; d <= c ; d++ ) {
    		cout << "*";
    	}
    	for(int j = 1 ; j < i ; j++ ) {
    		cout << "*";
    	}
    	c = c + 1;
    	b = b - 1;
    	cout << endl;
    }
}