fix: address code scanning alerts

Practical-Teaching/OPP-in-C++/11/1.cpp

@@ -1,12 +1,17 @@
 // 实现电话簿管理程序， Mytel类描述单个电话号码，TelManager类负责管理电话号码。把增、删、改、查功能封装到该类中。要求电话号码能从磁盘读写。
 
-#include <bits/stdc++.h>
+#include <cstring>
+#include <fstream>
+#include <iomanip>
+#include <iostream>
+#include <string>
+#include <vector>
 
 using namespace std;
 
 class Mytel {
 public:
-	void getdata() { cin >> name >> telno; }
+	void getdata() { cin >> setw(12) >> name >> setw(12) >> telno; }
 	void setname(char a[]) { strcpy(name, a); }
 	void settelno(char a[]) { strcpy(telno, a); }
 	void putdata() { cout << name << setw(12) << telno << endl; }
@@ -31,12 +36,12 @@ public:
 		}
 		Mytel s;
 		char name[12], telno[12];
-		input >> name >> telno;
+		input >> setw(12) >> name >> setw(12) >> telno;
 		s.setname(name);
 		s.settelno(telno);
 		while (input) {
 			a.push_back(s);
-			input >> name >> telno;
+			input >> setw(12) >> name >> setw(12) >> telno;
 			s.setname(name);
 			s.settelno(telno);
 		};
@@ -79,7 +84,7 @@ public:
 		for (int i = 0; i < a.size(); i++)
 			if (a[i].getname() == mname) {
 				cout << "电话：";
-				cin >> mtelno;
+				cin >> setw(12) >> mtelno;
 				a[i].settelno(mtelno);
 			}
 	}