Compilare: user.cpp: In function ‘int main()’: user.cpp:14:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&n); ^ user.cpp:18:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&x); ^ user.cpp:20:26: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(x==max && i==j+1) ^