版权声明:转自可爱的安安的博客!qq:1085589289 https://blog.csdn.net/ac1085589289/article/details/86561489
#include<iostream>
using namespace std;
int main()
{
int n;
cin>>n;
int a[1050];
for(int i=0;i<n;i++)
{
cin>>a[i];
}
int sum;
int flag=1;
cin>>sum;
for(int i=0;i<n;i++)
{
if(a[i]==sum)
{
cout<<i+1;
flag=0;
break;
}
}
if(flag) cout<<"-1";
return 0;
}