你的else語句放錯了位置，else應(yīng)該與if語句配套。

#include?<stdio.h>int?getIndex(int?arr[5],?int?value){????int?i;????int?index;????for?(i?=?0;?i?<?5;?i++)????{????????if?(arr[i]?==?value)????????{????????????index?=?i;????????????break;????????}????????else????????{????????????index?=?-1;????????}????}????return?index;}int?main(){????int?arr[5]?=?{?3,12,9,8,6?};????int?value?=?8;????int?index?=?getIndex(arr,?value);??????//這里應(yīng)該傳什么參數(shù)呢？????if?(index?!=?-1)????{???????printf("%d在數(shù)組中存在，下標(biāo)為：%d\n",?value,?index);????}????else????{????????printf("%d在數(shù)組中不存在。\n",?value);????}????return?0;}