put matrix from file into 2d dynamic array
I am working on a program which reads a matrix of integer and inputting them into a 2-D dynamic array, and also finding its dimension. Here is what I made so far :
Code:
FILE *fp;
int **array, *subarr;
int xsize,ysize,i=0;
char n;
fp = fopen("matrix.dat", "r");
if(fp == NULL){printf("error\n");return 0;}
array = (int **)malloc(sizeof(int *));
array[0] = (int *)malloc(sizeof(int));
xsize=ysize=0;
while(!feof(fp)){
fscanf(fp, "%d", &array[xsize][i]);
fscanf(fp, "%c", &n);
i++;
ysize++;
array[xsize] = realloc(array[xsize], (i+1) * sizeof(int));
if(n == '\n'){
xsize++;
i = 0;
array = realloc(array, (xsize+1) * sizeof(int *));
array[xsize] = (int *)malloc(sizeof(int));
}
}
xsize--;
ysize = (ysize-1) / xsize;
for(i=0;i<xsize-1;i++){
for(j=0;j<ysize;j++){
printf("%d", array[i][j]);
}
printf("\n");
}
here is the matrix.dat :
Code:
1 1 1 0 0 0 0 0
0 1 1 1 1 0 0 0
0 0 1 1 1 1 1 0
0 0 0 1 1 1 1 1
0 1 1 1 1 1 1 1
0 1 1 1 1 0 1 1
0 0 1 1 1 0 0 0
0 0 1 1 1 1 0 0
it gave me xsize = 6 and ysize = 10 instead of 8 X 8,
It sometimes gave me the right value, but when I change the matrix, it become screwed up. If anyone can give me a hint to where I made mistake with the code, I would appreciate it. Thanks
