#include<stdio.h>

int main(int argc,char *argv[])
{
int a =1;
switch(a)
{
printf("This will never print");
case 1: int x;
        x=10;
        printf(" x is %d",x);
break;

default :
break;
}   
return 0;

}

In function 'main':
Line 9: error: expected expression before 'int'
Line 10: error: 'x' undeclared (first use in this function)
Line 10: error: (Each undeclared identifier is reported only once
Line 10: error: for each function it appears in.)