Compilare: user.cpp: In function ‘int nr_div(int)’: user.cpp:10:5: warning: this ‘while’ clause does not guard... [-Wmisleading-indentation] while(x%2==0) ^~~~~ user.cpp:12:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘while’ x=x/2; ^ user.cpp:8:11: warning: unused variable ‘k’ [-Wunused-variable] int i,k=2,n=sqrt(x); ^ user.cpp:16:9: warning: unused variable ‘original_x’ [-Wunused-variable] int original_x=x; ^~~~~~~~~~