1int x = 0;23int4main()5{6 switch(x)7 return 1;8 switch(x) {9 default:10 return 1;11 case 0:12 ;13 }14 switch(x) {15 case 1:16 return 1;17 case 2:18 return 2;19 }20 switch(x)21 case 0:22 ;23 switch(x)24 case 0:25 switch(x) {26 case 0:27 goto next;28 default:29 return 1;30 }31 return 1;32 next:33 switch(x)34 case 1:35 return 1;36 switch(x) {37 {38 x = 1 + 1;39 foo:40 case 1:41 return 1;42 }43 }44 switch(x) {45 case 0:46 return x;47 case 1:48 return 1;49 default:50 return 1;51 }52}