Compilare: main.cpp: In function 'int main()': main.cpp:76:48: warning: unused variable 'retin2' [-Wunused-variable] 76 | int st=0,dr=i,retin=0,retin1=0,retin2=0; | ^~~~~~ main.cpp:35:13: warning: unused variable 'mask' [-Wunused-variable] 35 | int i,l,mask,j,k0,ras; | ^~~~ main.cpp:35:20: warning: unused variable 'k0' [-Wunused-variable] 35 | int i,l,mask,j,k0,ras; | ^~ main.cpp:35:23: warning: unused variable 'ras' [-Wunused-variable] 35 | int i,l,mask,j,k0,ras; | ^~~