向量点积计算 - C++ 代码实现

#include <iostream>
using namespace std;

int main() {
    int n;
    cin >> n;
    
    int a[n], b[n];
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    for (int i = 0; i < n; i++) {
        cin >> b[i];
    }
    
    int dotProduct = 0;
    for (int i = 0; i < n; i++) {
        dotProduct += a[i] * b[i];
    }
    
    cout << dotProduct << endl;
    
    return 0;
}