Compilare: user.cpp: In function ‘int main()’: user.cpp:29:23: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(i & (1 << j)) ^ user.cpp:20:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &g); ^ user.cpp:22:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &v[i]); ^