Compilare: user.cpp: In function ‘int main()’: user.cpp:37:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &n, &m); ^ user.cpp:43:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, " %c ", &map[i][j]); ^ user.cpp:125:12: warning: ‘end.Point::c’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(fout, "%d\n", dist[end.l][end.c]); ^ user.cpp:125:12: warning: ‘end.Point::l’ may be used uninitialized in this function [-Wmaybe-uninitialized]