Compilare: user.cpp: In function ‘int calc_nrz(int)’: user.cpp:10:9: warning: unused variable ‘nr’ [-Wunused-variable] int nr=0,p=5,so=0,x; ^ user.cpp: In function ‘int bin(int, int)’: user.cpp:33:1: warning: ‘nrz’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(nrz!=n) return -1; ^ user.cpp:23:9: warning: ‘k’ may be used uninitialized in this function [-Wmaybe-uninitialized] int k,nrz;lf++; ^