我可以
只收1,900元
用三倍券優惠價1,500元

ㄗˋㄐㄧˇ+U

grades = []
for i in range(5):
  grades.append(input(f"enter the {i+1} grade"))
for i in range(len(grades)):
  if grades[i] > 90:
    print(f"the {i+1} grade is A")
  elif gardes[i] > 80:
    print(f"the {i+1} grade is B")
  elif gardes[i] > 70:
    print(f"the {i+1} grade is C")
  elif gardes[i] > 60:
    print(f"the {i+1} grade is D")
  else:
    print(f"the {i+1} grade is F")

從C++改C應該比較容易些 (大概)
第一題：

   int grade = 0;
   int count[6] = {0};
   cout << "please enter the five grades :" << endl;
   while(cin >> grade){
       cout << grade;
       if(grade <= 100 && grade >= 90){
           cout << ' ' << 'A' << ' ';
           count[0]++;
       }
       else if(grade < 90 && grade >= 80){
           cout << ' ' << 'B' << ' ';
           count[1]++;
       }
       else if(grade < 80 && grade >= 70){
           cout << ' ' << 'C' << ' ';
           count[2]++;
       }
       else if(grade < 70 && grade >= 60){
           cout << ' ' << 'D' << ' ';
           count[3]++;
       }
       else if(grade < 60 && grade >= 0){
           cout << ' ' << 'F' << ' ';
           count[4]++;
       }
       else{
           cout << ' ' << "Error" << ' ';
           count[5]++;
       }
   }
   cout << '\n' << "Total " << "A: " << count[0] << ", B: " << count[1] << ", C: " << count[2] << ", D: " << count[3] << ",F : " << count[4] << ", Error: " << count[5];

第二題：

    cout << "please enter 5 prices :" << endl;
    float price, sum = 0;
    while(cin >> price){
        cout << price << ' ';
        if(price > 100 && price <= 200){
            price = price * 0.9;
        }
        else if(price > 200 && price <= 300){
            price = price * 0.8;
        }
        else if(price > 300 && price <= 400){
            price = price * 0.7;
        }
        else if(price > 400 && price <= 500){
            price = price * 0.6;
        }
        else if(price > 500){
            price = price * 0.5;
        }
        sum += price;
    }
    cout << '\n' << "The Summary is " << fixed  <<  setprecision(2) << sum;

大幾了呢 預計還有多久畢業？

想當初小大一時 我黑進老師的目錄 拿他的解答去交
老師從系辦追出來說：「同學，這是我的答案。」
當時真糗。

希望這篇不會有老師出來留言「同學這是我的作業。」