*
      * *
     *   *
    ***

#include <stdio.h>
#include <conio.h>
void main() {
	int i,j,x,t,im;
	clrscr();
	printf("insert a number to see the triangle\n");
	scanf("%d",&x);
	for (i=x;i>=1;i--)
	{
	    for (j=1;j<=i;j++) {
		im=x-i;
		if (j==i) {
			printf(" *");
			for (t=1;t<=im;t++) {
			    printf("**"); }}
		else
			printf(" ");
	    }
	    printf("\n"); }
	printf("Press enter to end the program");
	getch();
}