src.c:19:12: error: expected declaration specifiers or '...' before string constant
printf("%d\n",s);
^
src.c:19:19: error: unknown type name 's'
printf("%d\n",s);
^
src.c:20:5: error: expected identifier or '(' before 'return'
return 0;
^
src.c:21:1: error: expected identifier or '(' before '}' token
}
^