2号线点是在第1行只读，而你的可执行文件的数据段，程序初始化 S1 阵列给定的字符串。这是存储在堆栈中，您可以修改。

Line 2 points to the data section of your executable which is read-only, whereas in line 1, the program initializes s1 array with the given string. This is stored in stack, which you can modify.