為什么不存在
#include <stdio.h>
int getIndex(int arr[5],int value)
{
??? int i;
??? int index;
??? for(i=0;i<5;i++)
??? {
?????? /* 請(qǐng)完善數(shù)組查詢功能 */
??????? if(arr[i]==value)
??????? {
??????????? return i;
??????????? break;
??????? }
???????? return -1;
????????
??????
??????
??? }
??? return index=i;
}
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;???
}
2019-09-21
return -1要在for循環(huán)的外面,不然像你這樣每次都要返回一個(gè)-1