* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE P...
Pointer point Address=0x20000758, value=1 value Address=0x20000758, value=1 */ 实验2 //查看作为一种数据类型的指针需要占多少字节charc=1;shortsh=2;inti=3;longl=4;longlongll=5;char*p_c=&c;short*p_sh=&sh;int*p_i=&i;long*p_l=≪printf("sizeof:\tchar=%d\tshort=%d\tint=%d\tl...
int fseek ( FILE * stream, long int offset, int origin ); //origin有三种 //SEEK_SET---Beginning of file //SEEK_CUR---Current position of the file pointer //SEEK_END---End of file * /* fseek example */ #include <stdio.h> int main () { FILE * pFile; pFile = fopen ( "exa...
9 Pointer[row * Width + col] = value; 10 } 11 } 在ImageArgb32 中,我们也要写重复的代码: 代码 1 public class ImageArgb32 2 { 3 public Int32 Width { get; set; } 4 public Int32 Height { get; set; } 5 6 public unsafe Argb32* Pointer; ...
-Wshift-negative-value -Wunused-parameter (only with -Wunused or -Wall) -Wunused-but-set-parameter (only with -Wunused or -Wall) -Wchar-subscripts: 使用char类作为数组下标(因为char可能是有符号数) -Wcomment: 注释使用不规范。如“/* */”注释中还包括“/*”。我在项目源码发现过,不止一处。
/* writing to valueint is DEPRECATED, use cJSON_SetNumberValue instead */int valueint;/* The item's number, if type==cJSON_Number */double valuedouble;/* The item's name string, if this item is the child of, or is in the list of subitems of an object. */char *string;} c...
*/ use_modes_pointer(); /*致使modes_pointer未初始化*/ } 那个程序员希望从if语句跳出,但他却忘记了break关键字实际上跳出最近的那层循环语句或者switch语句。现在它跳出了switch语句,执行了use_modes_pointer()函数。但必要的初始化工作并未完成,为将来程序的失败埋下了伏笔。 2.1.4 、意想不到的八进制 ...
//set file pointer to the beginning fseek(fp, 0, SEEK_SET); // use rewind(fp) will do as well fclose(fp); return 0; } 结果 Before using fseek --->WENXUE.ca or 1eq.ca is a laomai tutorial website. After SEEK_SET to 23 --->a laomai tutorial website. ...
在C语言中,使用文件指针(File Pointer)来表示文件,通过文件指针可以进行文件的打开、关闭、读取和写入等操作。文件操作包括打开文件、关闭文件、读取文件、写入文件、移动文件指针等。 一、引言 1.1、文件的概念和作用 文件是计算机中存储数据的一种方式,它是一组相关数据的集合,可以包含文本、图像、音频、视频等各种类...
、指向常量的指针无法直接修改指针的值，但是可以通过修改指针指向的地址或指针指向未被const修饰的变量的值来改变指针的值（2） Pointer to constantYou cannot directly modify the value of a pointer, but you can change the value of the pointer by modifying the address it points to or the value of a...