pattern

#include<stdio.h>
int main()
{
    int i,j,row;

    printf("Enter the number of rows: ");
    scanf("%d",&row);

    for(i=1;i<=row;i++)
    {
        for(j=1;j<=row-i;j++)
        {
            printf(" ");
        }
        for(j=1;j<=i;j++)
        {
            printf("*");
        }
        for(j=1;j<i;j++)
        {
            printf("*");
        }
        printf("\n");
    }
}


Enter the number of rows: 4
   *
  ***
 *****
*******