[프로그래머스] 내적

 

• 풀이

#include <string>
#include <vector>

using namespace std;

int solution(vector<int> a, vector<int> b) {
    int answer = 0;
    for(int i=0; i<a.size(); i++){
        answer += a[i] * b[i];
    }
    return answer;
}