Compilare: user.c: In function ‘main’: user.c:53:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^ user.c:55:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &x[i], &y[i]); ^ user.c:74:20: warning: array subscript is below array bounds [-Warray-bounds] smin[n - 1] = min[n - 1]; ^ user.c:74:7: warning: array subscript is below array bounds [-Warray-bounds] smin[n - 1] = min[n - 1]; ^ user.c:75:20: warning: array subscript is below array bounds [-Warray-bounds] smax[n - 1] = max[n - 1]; ^ user.c:75:7: warning: array subscript is below array bounds [-Warray-bounds] smax[n - 1] = max[n - 1]; ^