이중포인터 사용시 에러

이대로 하면 되실 겁니다...

단지...C하고 Pointer에 대해서 많이 공부하셔야 될 것 같네요..^^;

#include

void print_matrix(int **);
void read_matrix(int **);

int main()
{
int **A, **B, **C;
int i;

/* pointer to pointer to int malloc */

A = (int **)malloc(sizeof(int *)*3);
*(A+0) = (int *) malloc(sizeof(int)* 3);
*(A+1) = (int *) malloc(sizeof(int)* 3);
*(A+2) = (int *) malloc(sizeof(int)*3);

B = (int **)malloc(sizeof(int *)*3);
*(B+0) = (int *) malloc(sizeof(int)* 3);
*(B+1) = (int *) malloc(sizeof(int)* 3);
*(B+2) = (int *) malloc(sizeof(int)*3);

C = (int **)malloc(sizeof(int *)*3);
*(C+0) = (int *) malloc(sizeof(int)* 3);
*(C+1) = (int *) malloc(sizeof(int)* 3);
*(C+2) = (int *) malloc(sizeof(int)*3);

puts("Input the first matrix(3*3)");
read_matrix(A);
puts("\t## A ##");
print_matrix(A);

puts("Input the second matrix(3*3)");
read_matrix(B);
puts("\t## B ##");
print_matrix(B);

for ( i = 0 ; i < 3; i++ )
{
*(*(C+i) + 0) = *(*(A+i) + 0) + *(*(B+i) + 0);
*(*(C+i) + 1) = *(*(A+i) + 1) + *(*(B+i) + 1);
*(*(C+i) + 2) = *(*(A+i) + 2) + *(*(B+i) + 2);
}

puts("\t## C ##");
print_matrix(C);

free(*(A+0));
free(*(A+1));
free(*(A+2));
free(A);

free(*(B+0));
free(*(B+1));
free(*(B+2));
free(B);

free(*(C+0));
free(*(C+1));
free(*(C+2));
free(C);

return 0;
}

void print_matrix(int **M)
{
int i;

for(i = 0; i < 3; i++)
printf("%d %d %d\n", *(*(M+i) +0), *(*(M+i) +1), *(*(M+i)
+2));
}

void read_matrix(int **M)
{
int i;

for(i = 0; i < 3; i++)
fscanf(stdin,"%d %d %d",(*(M+i) + 0), (*(M+i) +1), (*(M+i)
+2));
}