我在过去的一个半小时里一直在研究整数的开关，我知道如何用 char 进行开关，但这对我来说似乎很难。任何建议将不胜感激。我遇到的问题是我不能接受成绩该开关当前执行的操作超过 100
\n\n int testScore; \n cout <<"Enter your test score and I will tell you \\n";\n cout <<"the letter grade you earned ";\n cin >> testScore;\n\n switch(testScore/10)\n{ \n case 10:\n case 9:\n cout <<"Your grade is A.\\n";\n break;\n case 8: \n cout <<"Your grade is B.\\n";\n break;\n case 7: \n cout <<"Your grade is C.\\n";\n break;\n case 6: \n cout << "Your grade is D.\\n";\n break;\n case 5: \n cout << "Your grade is F.\\n";\n break;\n\n default:\n …