1.char s[5][5];
Here s is two dimensional array with 5 rows and 5 columns. Where in this 5 rows and 5 columns you will save element of type character.
2.char *s[5];
s is a one dimensional array with 5 elements each element is of type pointer to character.
3.char (*s)[5];
s is a pointer here not array. S points to a array of characters. for eg.
char arr[5][5];
char(*s)[5];
s = arr;
s[0][0] will be same as array of arr[0][0]
