函数~数组练习

函数初识

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int search();//函数原型
int main()
{
int index = search();
printf("找到的元素下标是 %d\n", index);
return 0;
}

int search()//自定义函数,查找数组下标
{
int nums[] = { 34,56,78, 3, 2 };
int i;
int searchNum, searchIndex = -1;
printf("请输入要查找的数字: ");
scanf("%d", &searchNum);
for (i = 0; i < 5; i++)
{
if (searchNum == *(nums + i))//如果查找的数组元素值和数组元素的值相等
{
searchIndex = i;//把数组元素下标赋给查找索引
break;
}
}
return searchIndex;//返回所找元素的下标
}