Question

I have the following file named arr.c..

unsigned long* arr[50];
unsigned long arrSizes[50];
unsigned short size = 0;

void add(unsigned long* x, int y){ 
  arr[size] = x;
  arrSizes[size] = y;
  size++;
}

void print() {
  int i,j;
  i=0;
  j=0;
  for(;i<size;i++){
     for(;j<arrSizes[i];j++)
        printf("%lu ",arr[i][j]);
     printf("\n");
  }
}

It prints an empty line, its not printing arr[2]. Any idea, why this might be happening?

Answer 1

in your print method j starts at 0, but it should be reset for each iteration of i.
Why not do it the normal way:

for(i = 0;i<size;i++){
 for(j = 0;j<arrSizes[i];j++)