[Codeup 1934] Find x - find element

/*
1934: find x
Topic description
Input a number n, then input n different values, and then input a value x, output the subscript of this value in this array (starting from 0, if it is not in the array, output -1).

enter
There are multiple sets of test data, enter n (1<=n<=200), then enter n numbers, and then enter x.
output
For each set of inputs, output the result.

sample input
4
1 2 3 4
3
Sample output
2
*/

#include<cstdio>
const int maxn = 210;
int a[maxn];
int main(){
	int n,x;
	while(scanf("%d",&n)!=EOF){
		for(int i=0;i<n;i++){
			scanf("%d",&a[i]);
		}
		scanf("%d",&x);
		int k;
		for(k=0;k<n;k++){
			if(a[k]==x){
				printf("%d\n",k);
				break;
			}
		}
		if(k==n){
		printf("-1\n");
		}
	}
	return 0;
}