c++运用一维数组简单的统计用户答题的正确率

#include

using namespace std;

int main (){
const char key[] = {'a','c','b','a','d'};// 定义一个常数组为正确答案 
const int NUM_QUES = 5;// 定义问题个数为5
char c;
int ques = 0,numCorrect = 0;//ques作为KEY[]的下标，numCorret 表示正确的题数 
cout << "Enter the" << NUM_QUES << "question tests：" <(numCorrect)/NUM_QUES*100<<"%";
        ques = 0; numCorrect = 0;cout << endl; 
    }
}
return 0;
}