sizeof(数组) sizeof(数组)=数组长度数组类型每个元素所占字节 如下: int arr[] = {1, 2, 3, 4}; sizeof(arr) = 16; char arr[] = "abc"; sizeof(arr) = 4; strlen(arr)=3 char arr[] = {'1', '2', '3'}; sizeof(arr) = 3; strlen(arr)=3; 1. 2. 3. 4. 5. 6. 7....