Compilare: user.cpp: In function ‘void divide(int, int, int, int)’: user.cpp:10:13: warning: unused variable ‘j’ [-Wunused-variable] int x,i,j,p,k1,ok=0; ^ user.cpp:10:15: warning: unused variable ‘p’ [-Wunused-variable] int x,i,j,p,k1,ok=0; ^ user.cpp:10:20: warning: variable ‘ok’ set but not used [-Wunused-but-set-variable] int x,i,j,p,k1,ok=0; ^ user.cpp: In function ‘int main()’: user.cpp:53:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0;k<f.length();k++) ^