Compilare: user.cpp: In function ‘int main()’: user.cpp:70: warning: operation on ‘ts’ may be undefined user.cpp:70: warning: operation on ‘ts’ may be undefined user.cpp:71: warning: operation on ‘ts’ may be undefined user.cpp:71: warning: operation on ‘ts’ may be undefined user.cpp:72: warning: operation on ‘ts’ may be undefined user.cpp:72: warning: operation on ‘ts’ may be undefined user.cpp:73: warning: operation on ‘ts’ may be undefined user.cpp:73: warning: operation on ‘ts’ may be undefined