add chapter 4 Question 1

ch04/01.cpp

@@ -0,0 +1,24 @@
+# include <iostream>
+# include <string>
+using namespace std;
+
+int main(){
+	string f_nm, l_nm;
+	char grad[5] = "ABCD";
+	int year, i;
+	char t;
+	cout << "What is your first name? ";
+	getline(cin, f_nm);
+	cout << "What is your last name? ";
+	getline(cin, l_nm);
+	cout << "What letter grade do you deserve? ";
+	cin >> t;
+	for (i=0; t != grad[i]; i++);
+	i++;
+	cout << "What is your age? ";
+	cin >> year;
+	cout << "Name: " << l_nm << ", " << f_nm << endl;  
+	cout << "Grade: " << grad[i] << endl;
+	cout << "Age: "	<< year << endl;
+	return 0;
+}