Compilare: user.c: In function ‘main’: user.c:11:10: warning: unused variable ‘j’ [-Wunused-variable] int i, j, l, c, lin, col, lf, cf, n, m, prim, ultim, g, h, dist; ^ user.c:12:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &m); ^ user.c:14:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &l, &c); ^ user.c:25:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d%d", &l, &c, &lf, &cf); ^