#includemain()int t;printf();scanf(d%,&t);switch(t)case 1:printf(mondayn);case 2:printf(tuesdayn);case 3:printf(wednesdayn);default:printf(errorn);while(1);%#include void main( ) int x=1,y=0,a=0,b=0; switch(x) case 1: switch(y) case 0: a+; break; case 1: b+; break; case 2: a+;b+; break; case 3: a+;b+; printf(na=%d,b=%d,a,b); while(1); %#include void main() int c; printf(Enter m or n or h or other:); c=getchar(); switch(c) case m: printf( Good morning!n);break; case n: printf( Good night!n); break; case h: printf( Hello!n); break; default : printf( ?n); while(1);