cout<<endl;
t1.a = 253;
cout<<"十进制 -> 253: "<<dec<<t1.a<<endl;
cout<<"十六进制-> 253: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 254;
cout<<"十进制 -> 254: "<<dec<<t1.a<<endl;
cout<<"十六进制-> 254: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 255;
cout<<"十进制 -> 255: "<<dec<<t1.a<<endl;
cout<<"十六进制-> 255: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 256;
cout<<"十进制 -> 256: "<<dec<<t1.a<<endl;
cout<<"十六进制-> 256: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 257;
cout<<"十进制 -> 257: "<<dec<<t1.a<<endl;
cout<<"十六进制-> 257: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 258;
cout<<"十进制 -> 258: "<<dec<<t1.a<<endl;
cout<<"十六进制-> 258: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 259;
cout<<"十进制 -> 259: "<<dec<<t1.a<<endl;
cout<<"十六进制-> 259: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 260;
cout<<"十进制 -> 260: "<<dec<<t1.a<<endl;
cout<<"十六进制-> 260: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 261;
cout<<"十进制 -> 261: "<<dec<<t1.a<<endl;
cout<<"十六进制-> 261: "<<hex<<t1.a<<endl;