#include <iostream>

using namespace std;

int main()

{

    float A[100], B[100], C[100];

    int i, N;

    cout << "Nhap so hoc sinh : ";

    cin >> N;

    for (i = 1; i <= N; i ++) {

        cout << "Nhap diem toan, ngu van HS " << i << " : ";

        cin >> A[i] >>B[i];

        C[i] = (A[i] + B[i]) / 2;

    }

    for (i = 1; i <= N; i ++) {

        cout << "Diem trung binh HS " << i << " : " << C[i] << endl;

    }

    return 0;

}

#include <iostream>
using namespace std;
int main(){
    long n;
    cout << "nhap so hoc sinh: ";
    cin >> n;
    double a[n][2];
    for (long i=0; i<n; i++){
        cout << "nhap diem toan cua ban thu " << i+1 << ": ";
        cin >> a[i][0];
        cout << "nhap diem van cua ban thu " << i+1 << ": ";
        cin >> a[i][1];
        double dtb=(a[i][0]+a[i][1])/2;
        cout << "diem trung binh cua ban thu " << i+1 <<": " << dtb << endl;
    }
}
$\color{red}{\text{#Daoanhviet96}}$