Remarks
No overflow checking is performed when strings are copied or appended. The behavior of strcat is undefined if the source and destination strings overlap.
注意,没有这个函数没有检查内存边界。如果soure和destination存在内存重叠,结果是不可预测的。
Security Remarks
The first argument, strDestination, must be large enough to hold the current strDestination and strSource combined and a closing '\0'; otherwise, a buffer overrun can occur.
第一个参数的内存缓冲区,必须足够大以能够容纳原来字符串和你要追加的字符串以及结尾的\0。否则会出现内存溢出。