longfib(intn){if(n>1)return(fib(n-1)+fib(n-2));elsereturn(1L);}m

longfib(intn)
{if(n>1)return(fib(n-1)+fib(n-2));
elsereturn(1L);
}
main()
{printf(“%ld\n”,fib(4));}
【正确答案】:5