Compilare: user.c: In function ‘main’: user.c:14:67: warning: variable ‘p2’ set but not used [-Wunused-but-set-variable] int nrlin, nrcol, lin, col, i, j, dc, dif, u, nr, contor, p1, p2; ^ user.c:14:63: warning: variable ‘p1’ set but not used [-Wunused-but-set-variable] int nrlin, nrcol, lin, col, i, j, dc, dif, u, nr, contor, p1, p2; ^ user.c:14:55: warning: variable ‘contor’ set but not used [-Wunused-but-set-variable] int nrlin, nrcol, lin, col, i, j, dc, dif, u, nr, contor, p1, p2; ^ user.c:16:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &nrlin, &nrcol); ^ user.c:20:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &nr); ^