strtok Unhandled exception;Access violation writing location

Question

#include 
#include 
#include 

char *matrix[10][10];
int main(void) {
    int i;
    char *list[4];
    char *words[20] = {
         


        

Answer 1

  token = strtok((words[random]),search); 

  while(token!=NULL) 
   {
    length=strlen(words[random]);

    for( k=0;k<length;k++){

      matrix [i][k]=token;

        token = strtok(NULL, search); 


          matrix [i][k]=token;

    } 
  }

This is messed and not what you intend. Change it to something straight, e. g.:

    for (k = 0, c = words[random]; token = strtok(c, search); c = NULL, ++k)
        matrix[i][k] = token;

Answer 2

In this statement

token = strtok((words[random]),search); 

function strtok tries to change a string literal addressed by the array element words[random].

String literals are immutable in C. Any attempt to change a string literal results in undefined behaviour.

Instead of the array of pointers to string literals

 char *words[20]={" c a t "," c a r "," b e a r "," s h i p "," m o u s e "," b e a t l e "," c o a t "," n e s t "," i c e "," s u g a r "," b a c o n "," f r o w n "," s m i l e "," d e a d "," f e a t h e r "," g o a t "," h e n "," j e l l y "," k o a l a "," l i p s "};

you should define a two dimensional character array initialized by the string literals. For example

 char words[20][20]={" c a t "," c a r "," b e a r "," s h i p "," m o u s e "," b e a t l e "," c o a t "," n e s t "," i c e "," s u g a r "," b a c o n "," f r o w n "," s m i l e "," d e a d "," f e a t h e r "," g o a t "," h e n "," j e l l y "," k o a l a "," l i p s "};