Compilare: main.cpp: In function 'void sl1()': main.cpp:39:9: warning: unused variable 'ct' [-Wunused-variable] int ct=0; ^~ main.cpp: In function 'void sl2()': main.cpp:66:9: warning: unused variable 'ct' [-Wunused-variable] int ct=0; ^~ main.cpp: In function 'void sc1()': main.cpp:93:9: warning: unused variable 'ct' [-Wunused-variable] int ct=0; ^~ main.cpp: In function 'void sc2()': main.cpp:120:9: warning: unused variable 'ct' [-Wunused-variable] int ct=0; ^~