Compilare: user.cpp: In function ‘bool div_com(int, int)’: user.cpp:13:5: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation] if(j==1) ^~ user.cpp:15:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘if’ return true; ^~~~~~ user.cpp: In function ‘int main()’: user.cpp:23:19: warning: unused variable ‘nr’ [-Wunused-variable] unsigned long nr=1; ^~