Compilare: user.c: In function ‘main’: user.c:12:68: warning: unused variable ‘dist’ [-Wunused-variable] int n, m, x, y, l, c, lf, cf, lin, col, g, h, i, j, prim, ultim, dist, min; ^ user.c:12:46: warning: unused variable ‘h’ [-Wunused-variable] int n, m, x, y, l, c, lf, cf, lin, col, g, h, i, j, prim, ultim, dist, min; ^ user.c:12:43: warning: unused variable ‘g’ [-Wunused-variable] int n, m, x, y, l, c, lf, cf, lin, col, g, h, i, j, prim, ultim, dist, min; ^ user.c:12:38: warning: unused variable ‘col’ [-Wunused-variable] int n, m, x, y, l, c, lf, cf, lin, col, g, h, i, j, prim, ultim, dist, min; ^ user.c:12:33: warning: unused variable ‘lin’ [-Wunused-variable] int n, m, x, y, l, c, lf, cf, lin, col, g, h, i, j, prim, ultim, dist, min; ^ user.c:13:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &m); ^ user.c:18:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &x, &y); ^ user.c:21:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d%d", &l, &c, &lf, &cf); ^