Compilare: main.cpp: In function 'int main()': main.cpp:17:23: warning: unused variable 'r' [-Wunused-variable] int c,n,i,cif=0,k,r=0,j,t,p,cr,cx,cifx; ^ main.cpp:17:27: warning: unused variable 'j' [-Wunused-variable] int c,n,i,cif=0,k,r=0,j,t,p,cr,cx,cifx; ^ main.cpp:17:33: warning: unused variable 'cr' [-Wunused-variable] int c,n,i,cif=0,k,r=0,j,t,p,cr,cx,cifx; ^~ main.cpp:17:36: warning: unused variable 'cx' [-Wunused-variable] int c,n,i,cif=0,k,r=0,j,t,p,cr,cx,cifx; ^~ main.cpp:17:39: warning: unused variable 'cifx' [-Wunused-variable] int c,n,i,cif=0,k,r=0,j,t,p,cr,cx,cifx; ^~~~ main.cpp:53:23: warning: 'nr' may be used uninitialized in this function [-Wmaybe-uninitialized] {nr=nr*10+l-'0'; ~~^~~