Compilare: main.cpp: In function 'void sim1(int, int)': main.cpp:47:9: warning: variable 'from' set but not used [-Wunused-but-set-variable] int from , to , i , newi , newj , o; ^~~~ main.cpp: In function 'void sim2(int, int)': main.cpp:85:9: warning: unused variable 'from' [-Wunused-variable] int from , to , i , newi , newj , o; ^~~~ main.cpp:85:16: warning: unused variable 'to' [-Wunused-variable] int from , to , i , newi , newj , o; ^~