Compilare: user.cpp: In function ‘int main()’: user.cpp:30:15: warning: unused variable ‘j’ [-Wunused-variable] int m,x,i,j,k,kk,maxi=0,nr; ^ user.cpp:30:17: warning: unused variable ‘k’ [-Wunused-variable] int m,x,i,j,k,kk,maxi=0,nr; ^ user.cpp:30:19: warning: unused variable ‘kk’ [-Wunused-variable] int m,x,i,j,k,kk,maxi=0,nr; ^ user.cpp:30:22: warning: unused variable ‘maxi’ [-Wunused-variable] int m,x,i,j,k,kk,maxi=0,nr; ^ user.cpp:31:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&n,&m); ^ user.cpp:44:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&x); ^