01:查找特定的值

 1 #include<iostream>
 2 using namespace std;
 3 int a[10001];
 4 int main()
 5 {
 6     int n;
 7     int ans;
 8     cin>>n;
 9     for(int i=1;i<=n;i++)
10     {
11         cin>>a[i];
12     }
13     cin>>ans;
14     for(int j=1;j<=n;j++)
15     {
16         if(a[j]==ans)
17         {
18             cout<<j;
19             break;
20         }
21         if(j==n&&a[j]!=ans)
22         {
23             cout<<-1;
24             break;
25         }
26     }
27     return 0;
28 }

5
2 3 6 7 3
3

2