/in/foo.c: In function 'main':
/in/foo.c:5:2: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
  scanf("%d",&n);
  ^~~~~
/in/foo.c:5:2: warning: incompatible implicit declaration of built-in function 'scanf'
/in/foo.c:5:2: note: include '<stdio.h>' or provide a declaration of 'scanf'
/in/foo.c:8:6: warning: implicit declaration of function 'ss' [-Wimplicit-function-declaration]
   if(ss(m))
      ^~
/in/foo.c:17:2: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
  printf("%d\n",count);
  ^~~~~~
/in/foo.c:17:2: warning: incompatible implicit declaration of built-in function 'printf'
/in/foo.c:17:2: note: include '<stdio.h>' or provide a declaration of 'printf'
/in/foo.c: In function 'ss':
/in/foo.c:25:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for (i=2;i<=m-1;i++)
  ^~~
/in/foo.c:28:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   if(i==m)
   ^~