Kindly Make me understand this code

Question

#include <stdio.h>
int main()
{
int i,j,n;
printf("Input number of rows for this pattern :");
scanf("%d",&n);
for(i=0;i<=n;i++)
{
for(j=1;j<=n-i;j++)
printf(" ");
for(j=1;j<=2*i-1;j++)
printf("*");
printf("\n");
}

}

Answer 1

First loop runs from value I=0, n including,.. repeating.. :

2nd prints 1 to n-i spaces, followed by 1 to 2*i-1 "*" like:
N spaces 1 star ; //( 2*1-1)
N-1 spaces 3 stars ; // 2*2-1
N-2 spaces 5 stars // 2*3-1
...
..
Until N-N spaces

Hope it helps...