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#include <stdio.h>
typedef struct NODE
{ 
  char data; 
  struct NODE *next;
} Node;
 
void foo (Node *head){}
 
void bar (void *head)
{
  foo ((struct Node* ) head); 
}
 
int main(){
k;
return 0;
}

prog.c: In function ‘bar’:
prog.c:12:16: warning: passing argument 1 of ‘foo’ from incompatible pointer type [enabled by default]
   foo ((struct Node* ) head); 
                ^
prog.c:8:6: note: expected ‘struct Node *’ but argument is of type ‘struct Node *’
 void foo (Node *head){}
      ^
prog.c: In function ‘main’:
prog.c:16:1: error: ‘k’ undeclared (first use in this function)
 k;
 ^
prog.c:16:1: note: each undeclared identifier is reported only once for each function it appears in

Standard output is empty