Compilare: user.c: In function ‘main’: user.c:11:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d%d", &n, &a); ^ user.c:16:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d", &a); ^ user.c:30:12: warning: ‘sf’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(fo, "%d %d %d", maxs, in+1, sf+1); ^ user.c:30:12: warning: ‘in’ may be used uninitialized in this function [-Wmaybe-uninitialized]