C++ 为什么我在printf遇到访问冲突？

调用堆栈如下： ucrtbased.dll！01905fcc未知 [下面的帧可能不正确和/或丢失，没有为UCRTBASE.dll加载符号] [外部代码] basketball.exe_VFPrPtffLIIOBFF * const流，conchchar * const格式，γ-CRTLLoalAlex指针* const x LoaLaar，char * AgListar线639 C++ basketball.exe！printfconst char*const\u格式。。。第954行C++

basketball.exe！主线81 C++ [外部代码]

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在查看有人链接的其他帖子后，如果您使用printflow以下命令：%s，myString.c_str；，printf显然可以工作。.c_str允许以我最初尝试的方式使用它。谢谢你的帮助和链接。不知怎的，我早些时候错过了那个帖子

为什么。。。。。。。。。。。。。。。。。。。。printf？嗯，今天学到了一些新东西。将printf与字符串一起使用时存在未定义的行为，您可能正在为缺失的case块6、7、8等插入值。请改用std:：cout。显然，用cout替换所有print f是可行的。但是为什么呢？您不能将cin/cout与scanf/printf混合使用吗？下面的操作正确。不能打开的箱子是玩家号码。这是一个不完整的LSU篮球花名册程序。基本上，您输入一个玩家号码，它会打印出拥有该号码的玩家的所有信息。基本上，整个程序通过使用cout更改所有printf实例来工作。那么，在使用case语句来决定字符串值时，是否可以不使用printf呢？或者在打印字符串时不能使用printf？@Rabbit84 printf是一个C函数。C不知道std:：string是什么。这会使未定义的行为崩溃，在本例中表现为崩溃，因为%s告诉printf您将提供指向以null结尾的字符数组的指针。string不仅仅是一个字符数组。基本上，你把方形的钉子塞进了圆孔，printf太老太笨了，无法分辨两者之间的区别。谢谢，@Fang提供了另一篇文章的链接。

//I keep getting an access violation.

#include <iostream>
#include <string>

using namespace std;

int main()
{
    int x;
    string playername, hometown,position,height,Class;
    int weight;

    cout << "Enter player number: ";
    cin >> x;

    switch(x){
    case 0: {
        playername = "Brandon Sampson";
        position = "Guard";
        weight = 193;
        hometown = "Baton Rouge, LA";
        height = "6-5";
        Class = "Sophomore";
        break;
    }
    case 1: {
        playername = "Dupo Reath";
        position = "Forward";
        weight = 235;
        hometown = "Perth, Australia";
        height = "6-10";
        Class = "Junior";
        break;
    }
    case 2: {
        playername = "Antonio Blakeney";
        position = "Guard";
        weight = 197;
        hometown = "Sarasota, Fla";
        height = "6-4";
        Class = "Sophomore";
        break;
    }
    case 3: {
        playername = "Elbert Robinton III";
        position = "Center";
        weight = 290;
        hometown = "Garland, Texas";
        height = "7-1";
        Class = "Junior";
        break;
    }
    case 4: {
        playername = "Skylar Mays";
        position = "Guard";
        weight = 205;
        hometown = "Baton Rouge, La";
        height = "6-4";
        Class = "Junior";
        break;
            }
    case 5: {
        playername = "Kieran Hayward";
        position = "Guard";
        weight = 195;
        hometown = "Sydney, Australia";
        height = "6-4";
        Class = "Freshman";
        break;
            }
    case 10: {
        playername = "Branden Jenkins";
        position = "Guard";
        weight = 180;
        hometown = "Maywood, Ill";
        height = "6-4";
        Class = "Junior";
        break;
    }

    }
            printf("Name:  %s", playername);
            printf("Position: %s\n", position);
            printf("Height: %s", height);
            printf(" Weight: %d", weight);
            printf("Hometown: %s\n", hometown);
            printf("Class: %s\n", Class);

            return 0;

}