#include <iostream>
#include <algorithm>
#include <cstring>

int func(int* arr, int length, int number){return std::find(arr,arr+length,number)-arr;}
int func(char* str, char ch){return std::find(str,str+std::strlen(str),ch)-str;}

int main() {
	int arr[] {1,2,3};
	std::cout<<func(arr,3,2)<<std::endl;
	std::cout<<func("ABCDE",'E')<<std::endl;
}