/in/foo.c: In function 'main':
/in/foo.c:12:2: warning: implicit declaration of function 'dg' [-Wimplicit-function-declaration]
  dg(max,sum,rest,c,v,flag,m);
  ^~
/in/foo.c: At top level:
/in/foo.c:16:6: warning: conflicting types for 'dg'
 void dg(int max[],int sum,int rest,int c[],int v[],int flag[],int m)
      ^~
/in/foo.c:12:2: note: previous implicit declaration of 'dg' was here
  dg(max,sum,rest,c,v,flag,m);
  ^~
/in/foo.c: In function 'dg':
/in/foo.c:28:8: warning: implicit declaration of function 'search' [-Wimplicit-function-declaration]
     if(search(c,m,rest,flag))
        ^~~~~~