在C语言中,处理错误返回通常涉及到错误码(error codes)和错误信息(error messages)。下面是一些建议来处理C语言中的错误返回: 使用错误码:通过返回特定的错误码来表示错误类型。例如,返回0表示成功,返回-1表示失败。可以使用枚举类型(enum)来定义一组错误码,并在函数中返回这些错误码。 代码语言:c 复制 typedef enu...
CHAPTER 6 C Socket errno Codes This chapter defines errno codes returned by the Cisco IOS for S/390 IUCV C socket functions. It includes these sections: Overview When an IUCV C socket function completes, the errno value provides additional information about the error reported. errno values are ...
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In C programming language, there is an external variable called “errno”. From this errno variable you can use some error handling functions to find out the error description and handle it appropriately. You have to include errno.h header file to use external variable errno. perror function pr...
File:E:\EclipseWorkspace\DailyCode\CCodes\com.ming.code\support.c Date:Dec142018Time:11:28:35Line:626ANSI:1 预处理器运算符 C 预处理器提供了下列的运算符来帮助您创建宏: 宏延续运算符(\) 一个宏通常写在一个单行上。但是如果宏太长,一个单行容纳不下,则使用宏延续运算符(\)。例如: ...
#include <pjlib-util/errno.h> #include <pjlib-util/types.h> #include <pj/assert.h> #include <pj/string.h> /* PJLIB_UTIL's own error codes/messages * MUST KEEP THIS ARRAY SORTED!! * Message must be limited to 64 chars! */ #if defined(PJ_HAS_ERROR_STRING) && PJ_HAS_ERROR_ST...
语法: #include <stdio.h> int feof( FILE *stream ); 函数feof()在到达给出的文件流的文件尾时返回一个非零值. 相关主题:clearerr(),ferror(),perror(),putc()和getc(). ferror 语法: #include <stdio.h> int ferror( FILE *stream );
Problem with fread() errno 22 Problem with linker LNK4017 Problem with SetupApi Problem with UrlDownloadToFile Problem with Ws2_32.dll Problems using COM (error LNK2019) problems with TLBIMP:'interopx.dll' not a valid type library. program doesn't crash when the debugger is attached Program ...
#include <errno.h> int main() { setlocale(LC_ALL, "chs"); // 设置本地化信息,以支持中文显示 FILE *fp = fopen("test.txt", "r"); // 以多字节字符流的方式打开文件 if (fp == NULL) { printf("打开文件失败!错误原因:%s ", strerror(errno)); // 输出错误信息 ...
29、ar> - for manipulating wide streams and several kinds of strings <cwctype> - for classifying wide characters 旧的C标准库 <assert.h> - for enforcing assertions when functions execute <ctype.h> - for classifying characters <errno.h> - for testing error codes reported by library f 30、un...