Trasponi Matrice

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#define MAX_LEN 32
#define Begin {
#define End }
#define a aarray[i][j]
#define b aarray[j][i]

void file_to_matrix(FILE *, int (*)[MAX_LEN], int *, int *);
void matrix_to_file(int (*)[MAX_LEN], int, int, FILE *);
void transpose_matrix(int (*)[MAX_LEN], int, int);

main()
Begin
    int array[MAX_LEN][MAX_LEN], rows=0, columns=0;
    FILE * fi, *fo;
    fi=fopen("matrix.dat", "r");
    fo=fopen("matrix_output.dat", "w");
    file_to_matrix(fi, array, &rows, &columns);
    transpose_matrix(array, rows, columns);
    matrix_to_file(array, columns, rows, fo);
    fclose(fi);
    fclose(fo);
    return 0;
End

void file_to_matrix(FILE * fp, int (*aarray)[MAX_LEN], int *m, int *n)
Begin
    int j=0;
    char c;
    while(feof(fp)==0)
    Begin
        c=fgetc(fp);
        if(isdigit(c))
        Begin
            aarray[*m][j++]=c-'0';
            ++*n;
        End
        else if(c=='\n')
        Begin
            ++*m;
            j=0;
        End
    End
    ++*m;
    (*n)/=(*m);
End

void transpose_matrix(int (*aarray)[MAX_LEN], int m, int n)
Begin
    int i, j;
    for(i=0;i<m;i++)
        for(j=0;j<n;j++)
            (i>=j)?:(a^=b^=a^=b);
End

void matrix_to_file(int (*aarray)[MAX_LEN], int m, int n, FILE * fp)
Begin
    int i, j;
    for(i=0;i<m;i++)
    Begin
        for(j=0;j<n;j++)
            fprintf(fp, "%1d\t", aarray[i][j]);
        fprintf(fp, "\n");
    End
End