i'm trying to multiply two sparse matrix each read in a singly linked list. Their defining structures are above...I actually made the reading from keyboard, the display and i need the multiplication between the two matrix A, B read from keyboard and i have no clue about it. Hope you can help me!


typedef struct node
{
int i,j,val;
struct node *next;
} NOD;

typedef struct matrix
{
int numb_lines;
int numb_columns;
int numb_elem;
NOD *first;
NOD *last;
} MATRIX;