Question

所以这是一个简单的练习计划。

#include "stdafx.h"
#include "iostream"
#include "conio.h"
#include "stdio.h"

using namespace std;

class book
{
    int bookno;
    char bookt[20];
    float price;
    float totalcost(int n)
    {
        float tot;
        tot = n * price;
        return tot;
    }
public:
    void input()
    {
        cout << "\nEnter book number: ";
        cin >> bookno;
        cout << "\nEnter book title: ";
        gets_s(bookt);                    //Does not identify this.
        cout << "\nEnter book price: ";
        cin >> price;
    }
    void purchase()
    {
        int n;
        float total;
        cout << "\nEnter the number of books to be purchase: ";
        cin >> n;
        total = totalcost(n);
        cout << "\nTotal amount is: " << total;
    }
};

int _tmain(int argc, _TCHAR* argv[])
{
    book B1;
    B1.input();
    B1.purchase();
    _getch();
    return 0;
}

编译器（Visual C ++ 2010）无法识别gets_s。从某种意义上说，它只是跳过输出中的输入字段，如下所示：

OUTPUT

Enter book number: 5

Enter book title:
Enter book price: 5

Enter the number of books to be purchased: 5

Total amount is: 25

它只是没有给我时间输入书名并同时运行booktitle和bookprice。帮助

Answer 1

问题是，执行以下操作时，不会从输入流中提取换行符：

cin >> bookno;

最快的方法是在它之后插入一个额外的cin.get（）（在你的input（）方法中）：

cout << "\nEnter book number: ";
cin >> bookno;
cin.get();
cout << "\nEnter book title: ";
gets_s(bookt);                    // Now it will identify this.
cout << "\nEnter book price: ";
cin >> price;

另一个建议是尽量避免混合C和C ++函数。

Visual C ++无法识别gets_s

1 个答案: