Проблема индексации массива. Проверьте этот код
#include <stdio.h>
#include <time.h>
#include <string.h>
#include <ctype.h>
#define SIZE 6
#define MAX 10
// typedef enum {true, false} bool;
// Draw the board with random characters
void board(char* matrix){
int i, j;
for(i=0; i<SIZE; i++){
for(j=0; j<SIZE; j++){
matrix[i*SIZE + j] = 'A'+(50 *i *j)%('Z'-'A'+1);
}
}
}
// Prints the board
void printBoard(char* matrix){
int i, j;
srand((unsigned int)time(NULL));
board(matrix);
for(i=0; i<SIZE; i++){
for(j=0; j<SIZE; j++){
printf(" %c ", matrix[i*SIZE + j]);
}
printf("\n");
}
}
enum class Direction : int
{
Left = 0,
Right,
Up,
Down,
Unknown
};
bool SearchGivenStart(char* matrix,
char* find, int length,
int startRowIndex,
int startColumnIndex,
Direction direction)
{
printf("Start %d %d\n", startRowIndex, startColumnIndex);
int nextRowIndex = startRowIndex;
int nextColumnIndex = startColumnIndex;
for(int i = 1; i< length - 1 ;i++)
{
if(direction == Direction::Left)
{
nextColumnIndex -= 1;
}
else if (direction == Direction::Right)
{
nextColumnIndex += 1;
}
else if (direction == Direction::Up)
{
nextRowIndex -= 1;
}
else if (direction == Direction::Down)
{
nextRowIndex += 1;
}
else
{
// Assert error
}
printf("Next %d %d\n", nextRowIndex, nextColumnIndex);
// Check bounds
if(nextRowIndex < 0 ||
nextRowIndex > SIZE ||
nextColumnIndex < 0 ||
nextColumnIndex > SIZE )
{
printf("returning false out of bound\n");
return false;
}
if (matrix [nextRowIndex * SIZE + nextColumnIndex] != find [i])
{
printf("returning false\n");
return false;
}
}
printf("returning true\n");
return true;
}
bool Search(char* matrix, char* find, int length)
{
// Find start
// For each start candidate, serach all possible direction
printf("%s %d\n", find, length);
bool found = false;
for (int i = 0; i < SIZE; i++)
{
for(int j= 0; j< SIZE; j++)
{
if ( matrix[i*SIZE + j] == find[0] )
{
printf("%d %d\n", i, j);
found = SearchGivenStart(matrix,
find,
length,
i,
j,
Direction::Left);
if (found)
return true;
found = SearchGivenStart(matrix,
find,
length,
i,
j,
Direction::Right);
if (found)
return true;
found = SearchGivenStart(matrix,
find,
length,
i,
j,
Direction::Up);
if (found)
return true;
found = SearchGivenStart(matrix,
find,
length,
i,
j,
Direction::Down);
if (found)
return true;
}
}
}
return found;
}
bool adjacentSearch(char* matrix, char* find, int i, int j, int index){
if(index == strlen(find))
return true;
if(i < 0 || j < 0 || i > SIZE-1 || j > SIZE - 1){
return true;
}
if(matrix[i *SIZE + j] != find[index]){
return false;
}
matrix[i*SIZE + j] = '*';
bool searchFurther = adjacentSearch(matrix, find, i+1, j, index+1) || adjacentSearch(matrix, find, i-1, j, index+1) || adjacentSearch(matrix, find, i, j-1, index+1) || adjacentSearch(matrix, find, i, j+1, index+1);
matrix[i * SIZE + j] = find[index];
return searchFurther;
}
bool exist(char* matrix, char* find, int r, int c){
int len = strlen(find);
if(len > r * c)
return false;
for(int i=0; i<SIZE; i++){
for(int j=0; j<SIZE; j++){
if(matrix[i*SIZE + j] == find[0]){
if(adjacentSearch(matrix, find, i, j, 0)){
return true;
}
}
}
}
return false;
}
// Driver
int main(){
char matrix[SIZE][SIZE];
char word[MAX] = "SOKK";
printBoard((char *)matrix);
printf("\nThink of a word> ");
fgets(word, MAX, stdin);
printf("word: %s", word);
/*if(exist((char *)matrix, word, SIZE, SIZE)){
printf("Found\n");
}*/
if(Search((char *)matrix, word, strlen(word)))
{
printf("%s Found\n", word);
}
/*if(found)
{
printf("%s Found\n", word);
}*/
else{
printf("%s Not Found\n", word);
}
return 0;
}