4.21字符数组的定义及初始化 注意数组越界 char user Name =tree //存储用户名的字符数组,实际数长度为5 userName [4]='s userName [5='\0 数组下标越界了 cout<userName endl Microsoft visual studio A Run-Time Check Failure #2- Stack around the variable 'userName' was corrupted 上中[ 忽略①4.2.1 字符数组的定义及初始化 注意数组越界 char userName[] = "tree"; // 存储用户名的字符数组，实际数组长度为5 userName[4] = 's'; userName[5] = '\0'; cout<<userName<<endl; 数组下标越界了