/in/foo.c: In function 'Findmin':
/in/foo.c:4:14: error: 'i' undeclared (first use in this function)
  for(int n=1;i<n;i++)
              ^
/in/foo.c:4:14: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:8:5: error: expected ';' before 'printf'
     printf("%d",a[i]);
     ^~~~~~
/in/foo.c: In function 'main':
/in/foo.c:18:11: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int' [-Wformat=]
   scanf("%d",a[i]);
           ^