Compilare: user.cpp: In function ‘int main()’: user.cpp:24:14: warning: unused variable ‘tatact’ [-Wunused-variable] int tata,tatact,xt,yt,l,c,racum,opc; ^ user.cpp:24:21: warning: unused variable ‘xt’ [-Wunused-variable] int tata,tatact,xt,yt,l,c,racum,opc; ^ user.cpp:24:24: warning: unused variable ‘yt’ [-Wunused-variable] int tata,tatact,xt,yt,l,c,racum,opc; ^ user.cpp:24:37: warning: variable ‘opc’ set but not used [-Wunused-but-set-variable] int tata,tatact,xt,yt,l,c,racum,opc; ^