英文:
Exception thrown at 0x00007FFCCCB30369 (ucrtbased.dll) in Project3.exe: 0xC0000005: Access violation writing location 0x000000894B700000
问题
我正在学习C语言，在Microsoft Visual Studio中运行了这些代码，但出现了访问冲突异常。您能帮我找出原因吗？
#include <stdio.h>
int main() {
char name[10];
printf("Enter your name\n");
scanf_s("%s", name);
printf("Welcome %s\n", name);
return 0;
}
我已经查找了很多解决方案，但有些并不起作用。我尝试删除name中的&，但没有帮助。
英文:
I'm studying C language, I ran these codes in Microsoft Visual Studio, but I got an access violation exception, Could you please help me find out the reason?
#include <stdio.h>
int main() {
char name[10];
printf("Enter your name\n");
scanf_s("%s", name);
printf("Welcome %s\n", name);
return 0;
}
I've looked for numerous solutions to this, however some are no effective. I tried removing the & from the name, but that didn't help.
答案1
得分: 2
你也需要将 name 的长度提供给 scanf_s 函数：
scanf_s("%s", name, (unsigned)sizeof name);
没有提供长度的话，程序会出现未定义的行为，可能导致崩溃。
英文:
You need to provide the length of name to scanf_s too:
scanf_s("%s", name, (unsigned)sizeof name);
Without the lenght, the program will have undefined behavior and may therefore crash
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