尝试在 C 中执行 strcat 函数时的 EXC_BAD_ACCESS [英] EXC_BAD_ACCESS When Trying to Perform a strcat Function in C

问题描述

我有一个用 C 为 uni 编写的程序，当我的代码到达这一行时:

I have a program I am writing for uni in C, and when my code reaches this line:

strcat("md5 ", "blah");

我收到了 EXC_BAD_ACCESS 错误，我的应用程序崩溃了.据我所知，它没有任何问题，所以我认为一双新的眼睛可能会解决我的问题.有什么想法吗?

I am getting a EXC_BAD_ACCESS error, and my app crashes. As far as I can tell, there isn't anything wrong with it, so I thought a fresh pair of eyes might solve my problem. Any ideas?

推荐答案

您正在尝试修改常量字符串.strcat 的第一个参数也是目标字符串，在您的情况下它是一个常量字符串.你应该使用类似的东西:

You're trying to modify a constant string. The first argument of strcat is also the destination string and in your case it is a constant string. You should use something like:

char s[100];
strcpy(s, "md5 ");
strcat(s, "blah");

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