How to equate two variables in a loop in C just like in JS?

Question

Programming

int main (void)
{
    int row= 0;
     int height;
  do
  {
      printf("Height:");
      height = GetInt();
  } while ( 0 > height || height > 23 );
    
    for ( int i=height; i>=row;i-- ) {
        
        for ( int j=0; j<=i ; j++ ) {
            
            printf("  ");
             }
        	for ( int k= j ; k<=row+height; k++ ) {
                
    			    printf("#");
    	   
        }
     printf("\n");
    }
}

file.c:21:23: error: use of undeclared identifier 'j'
for ( int k= j ; k<=row+height; k++ ) {
^

Answer 1

declare j before for
"A variable can also be declared in the initializing part of a for statement. In this case, the scope of the variable (or variables) extends to the end of the statement." - that is, j is only visible in the for loop in which it was initialized