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AlgorithmsAlgorithms（算法）bsearchbsearch_sqsortqsort_sAtomic operationsAtomic operations library（原子操作库）ATOMIC_*_LOCK_FREEatomic_compare_exchange_strongatomic_compare_exchange_strong_explicitatomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_exchangeatomic_exchange_explicitatomic_fetch_addatomic_fetch_add_explicitatomic_fetch_andatomic_fetch_and_explicitatomic_fetch_oratomic_fetch_or_explicitatomic_fetch_subatomic_fetch_sub_explicitatomic_fetch_xoratomic_fetch_xor_explicitatomic_flagatomic_flag_clearatomic_flag_clear_explicitATOMIC_FLAG_INITatomic_flag_test_and_setatomic_flag_test_and_set_explicitatomic_initatomic_is_lock_freeatomic_loadatomic_load_explicitatomic_signal_fenceatomic_storeatomic_store_explicitatomic_thread_fence（线程围栏）ATOMIC_VAR_INITkill_dependencymemory_order（内存排序）C keywordsauto（自动存储）break（跳出循环）C keywords（关键词）casecharconst（常量修饰符）continuedefault（预设运算式）dodouble（双精度浮点型）elseenum（枚举类型）extern（全局变量）float（浮点数）forfortrangoto（goto语句）if（if语句）inline（行内函式）intlong（长整型）register（寄存器变量）restrict（ restrict类型限定符）returnshortsignedsizeof（sizeof运算符）static（静态变量）struct（结构体）switch（switch语句）typedef（typedef关键字）union（联合体）unsigned（无符号）void（空类型）volatile（volatile变量）while（while语句）_Alignas_Alignof_Atomic_Bool_Complex_Generic_Imaginary_Noreturn_Static_assert_Thread_localC language#define directive#elif directive#else directive#endif directive#error directive#if directive#ifdef directive#ifndef directive#include directive#line directive#pragma directivealignas（对齐指定符）Alternative operators and tokens（替代运算符和令牌）AnalyzabilityArithmetic operatorsArithmetic typesArray declaration（数组声明）Array initialization（阵列初始化）ASCII ChartAssignment operators（赋值运算符）types（atomic类型限定符）Basic conceptsBit fields（位域）break statementC languageC Operator Precedencecast operatorcharacter constant（字符字面量）Comments（注释符）Comparison operators（比较运算符）compound literals（符合字面量）Conditional inclusion（条件包含）Conformance（一致性）const type qualifier（const 限定符）Constant expressions（常量表达）continue statementDeclarations（声明）do-while loopEnumerations（枚举类型）Escape sequences（转义字符）Expressions（表达式）External and tentative definitions（外部和暂定的定义）File scope（文件范围）floating constant（浮点常量）for loopFunction declarations（函数声明）Function definitions（函数声明）FunctionsGeneric selection泛型选择goto statementIdentifier（标示符）if statementImplicit conversions（隐式转换）Increment/decrement operators（前置/后置操作符）Initialization（初始化）inline function specifier（内联函式）integer constantLifetime（生命期）Logical operators（逻辑运算符）Lookup and name spacesMain function（主函式）Member access operators（会员接入运营商）Memory modelObjects and alignment（字节对齐）Order of evaluation（评估顺序）Other operatorsPhases of translation（翻译阶段）Pointer declarationPreprocessor（预处理）restrict type qualifier（restrict类型限定符）return statementScalar initialization（标量类型初始化）Scope（范围）sizeof operator（sizeof运算符）Statements（陈述）static assert declaration（静态断言声明）Static storage duration（静态存储周期）Storage-class specifiers（存储类说明符）string literals（字符串字面量）Struct and union initialization（结构体与联合体初始化）Struct declaration（结构体声明）switch statementThread storage duration（线程存储时间）TypeType（类型）Typedef declaration（Typedef声明）Undefined behavior（未定义行为）Union declaration（联合体声明）Value categories（值类别）Variadic arguments（变长参数宏）volatile type qualifier（volatile 类型限定符）while loop_Alignof operator_Noreturn function specifierDate and timeasctime（asctime函数）asctime_sclockCLOCKS_PER_SECclock_tctime（ctime函数）ctime_sDate and time utilities（日期和时间库）difftime（计算两个时间的间隔）gmtimegmtime_slocaltimelocaltime_smktime（将时间结构数据转换成经过的秒数的函数）strftime（格式化输出时间函数）timetimespectimespec_gettime_ttmwcsftime（格式化时间宽字符）Dynamic memory managementaligned_allocC memory management library（内存管理库）callocfree（释放动态分配空间的函数）malloc（动态分配内存空间的函数）realloc（重新分配内存空间的函数）Error handlingabort_handler_sassert（断言）constraint_handler_terrno（错误报告）Error handling（错误处理）Error numbers（错误个数）ignore_handler_sset_constraint_handler_sstatic_assertFile input/outputclearerr（清除/复位）fclosefeofferrorfflush（清空文件缓冲区）fgetcfgetposfgetsfgetwcfgetwsFile input/outputfopenfopen_sfprintffprintf_sfputcfputsfputwcfputwsfreadfreopenfreopen_sfscanffscanf_sfseekfsetposftellfwidefwprintffwprintf_sfwritefwscanffwscanf_sgetcgetchargetsgets_sgetwcharperrorprintfprintf_sputcputcharputsputwcputwcharremoverenamerewindscanfscanf_ssetbufsetvbufsnprintfsprintfsscanfsscanf_sswprintfswprintf_sswscanfswscanf_stmpfiletmpfile_stmpnamtmpnam_sungetcungetwcvfprintfvfprintf_svfscanfvfscanf_svfwprintfvfwprintf_svfwscanfvfwscanf_svprintfvprintf_svscanfvscanf_svsnprintfvsprintfvsscanfvsscanf_svswprintfvswprintf_svswscanfvswscanf_svwprintfvwprintf_svwscanfvwscanf_swprintfwprintf_swscanfwscanf_sLocalization supportlconvLC_ALLLC_COLLATELC_CTYPELC_MONETARYLC_NUMERICLC_TIMElocaleconvLocalization supportsetlocaleNumericsabsacosacosfacoshacoshfacoshlacoslasinasinfasinhasinhfasinhlasinlatanatan2atan2fatan2latanfatanhatanhfatanhlatanlcabscabsfcabslcacoscacosfcacoshcacoshfcacoshlcacoslcargcargfcarglcasincasinfcasinhcasinhfcasinhlcasinlcatancatanfcatanhcatanhfcatanhlcatanlcbrtcbrtfcbrtlccosccosfccoshccoshfccoshlccoslceilceilfceillcexpcexpfcexplcimagcimagfcimaglclogclogfcloglCMPLXCMPLXFCMPLXLCommon mathematical functionscomplexComplex number arithmeticconjconjfconjlcopysigncopysignfcopysignlcoscosfcoshcoshfcoshlcoslcpowcpowfcpowlcprojcprojfcprojlcrealcrealfcreallcsincsinfcsinhcsinhfcsinhlcsinlcsqrtcsqrtfcsqrtlctanctanfctanhctanhfctanhlctanldivdouble_terferfcerfcferfclerfferflexpexp2exp2fexp2lexpfexplexpm1expm1fexpm1lfabsfabsffabslfdimfeclearexceptfegetenvfegetexceptflagfegetroundfeholdexceptferaiseexceptfesetenvfesetexceptflagfesetroundfetestexceptfeupdateenvFE_ALL_EXCEPTFE_DFL_ENVFE_DIVBYZEROFE_DOWNWARDFE_INEXACTFE_INVALIDFE_OVERFLOWFE_TONEARESTFE_TOWARDZEROFE_UNDERFLOWFE_UPWARDFloating-point environmentfloat_tfloorfloorffloorlfmafmaffmalfmaxfmaxffmaxlfminfminffminlfmodfmodffmodlfpclassifyFP_INFINITEFP_NANFP_NORMALFP_SUBNORMALFP_ZEROfrexpfrexpffrexplHUGE_VALHUGE_VALFHUGE_VALLhypothypotfhypotlIilogbilogbfilogblimaginaryimaxabsimaxdivINFINITYisfiniteisgreaterisgreaterequalisinfislessislessequalislessgreaterisnanisnormalisunorderedlabsldexpldexpfldexplldivlgammalgammaflgammalllabslldivllrintllrintfllrintlllroundllroundfllroundlloglog10log10flog10llog1plog1pflog1pllog2log2flog2llogblogbflogbllogflogllrintlrintflrintllroundlroundflroundlMATH_ERREXCEPTmath_errhandlingMATH_ERRNOmodfmodffmodflnanNANnanfnanlnearbyintnearbyintfnearbyintlnextafternextafterfnextafterlnexttowardnexttowardfnexttowardlNumericspowpowfpowlPseudo-random number generationrandRAND_MAXremainderremainderfremainderlremquoremquofremquolrintrintfrintlroundroundfroundlscalblnscalblnfscalblnlscalbnscalbnfscalbnlsignbitsinsinfsinhsinhfsinhlsinlsqrtsqrtfsqrtlsrandtantanftanhtanhftanhltanltgammatgammaftgammaltrunctruncftrunclType-generic math_Complex_I_Imaginary_IProgram supportabortatexitat_quick_exitexitEXIT_FAILUREEXIT_SUCCESSgetenvgetenv_sjmp_buflongjmpProgram support utilitiesquick_exitraisesetjmpSIGABRTSIGFPESIGILLSIGINTsignalSIGSEGVSIGTERMsig_atomic_tSIG_DFLSIG_ERRSIG_IGNsystem_ExitStringsatofatoiatolatollbtowcc16rtombc32rtombchar16_tchar32_tisalnumisalphaisblankiscntrlisdigitisgraphislowerisprintispunctisspaceisupperiswalnumiswalphaiswblankiswcntrliswctypeiswdigitiswgraphiswloweriswprintiswpunctiswspaceiswupperiswxdigitisxdigitmblenmbrlenmbrtoc16mbrtoc32mbrtowcmbsinitmbsrtowcsmbsrtowcs_smbstate_tmbstowcsmbstowcs_smbtowcmemchrmemcmpmemcpymemcpy_smemmovememmove_smemsetmemset_sNull-terminated byte stringsNull-terminated multibyte stringsNull-terminated wide stringsstrcatstrcat_sstrchrstrcmpstrcollstrcpystrcpy_sstrcspnstrerrorstrerrorlen_sstrerror_sStrings librarystrlenstrncatThread supportcall_oncecnd_broadcastcnd_destroycnd_initcnd_signalcnd_timedwaitcnd_waitmtx_destroymtx_initmtx_lockmtx_plainmtx_recursivemtx_timedmtx_timedlockmtx_trylockmtx_unlockonce_flagONCE_FLAG_INITthrd_busythrd_createthrd_currentthrd_detachthrd_equalthrd_errorthrd_exitthrd_jointhrd_nomemthrd_sleepthrd_successthrd_timedoutthrd_yieldThread support librarythread_localtss_createtss_deleteTSS_DTOR_ITERATIONStss_gettss_setType supportBoolean type support libraryFixed width integer typesFLT_EVAL_METHODFLT_ROUNDSmax_align_tNULLNumeric limitsoffsetofptrdiff_tsize_tType supportVariadic functionsVariadic functionsva_argva_copyva_endva_listva_start

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类型

| 在头文件<stdint.h>中定义

|:----|

| int8_tint16_tint32_tint64_t | 有符号整数类型，其宽度分别为8,16,32和64位，不带填充位，并使用2的补码作为负值（仅当实现直接支持该类型时才提供）|

| int_fast8_tint_fast16_tint_fast32_tint_fast64_t | 最快的有符号整数类型，其宽度至少分别为8,16,32和64位|

| int_least8_tint_least16_tint_least32_tint_least64_t | 最小有符号整数类型，宽度至少分别为8,16,32和64位|

| intmax_t | 最大宽度整数类型|

| intptr_t | 整数类型可以容纳一个指针|

| uint8_tuint16_tuint32_tuint64_t | 无符号整数类型，宽度分别为8,16,32和64位（仅当实现直接支持类型时才提供）|

| uint_fast8_tuint_fast16_tuint_fast32_tuint_fast64_t | 最快的无符号整数类型，分别具有至少8,16,32和64位的宽度

| uint_least8_tuint_least16_tuint_least32_tuint_least64_t | 最小无符号整数类型，分别具有至少8,16,32和64位的宽度|

| uintmax_t | 最大宽度无符号整数类型|

| uintptr_t | 无符号整数类型，可以存放指针|

宏常量

| 在头文件<stdint.h>中定义 |

|:----|

| 有符号整数：最小值|

| INT8_MININT16_MININT32_MININT64_MIN | int8_t，int16_t，int32_t，int64_t（macroconstant）类型的对象的最小值|

| INT_FAST8_MININT_FAST16_MININT_FAST32_MININT_FAST64_MIN | int_fast8_t，int_fast16_t，int_fast32_t，int_fast64_t（宏常量）类型的对象的最小值|

| INT_LEAST8_MININT_LEAST16_MININT_LEAST32_MININT_LEAST64_MIN | int_least8_t，int_least16_t，int_least32_t，int_least64_t（宏常量）类型的对象的最小值|

| INTPTR_MIN | intptr_t（宏常量）|类型的对象的最小值

| INTMAX_MIN | intmax_t（宏常量）|类型的对象的最小值

| 有符号整数：最大值|

| INT8_MAXINT16_MAXINT32_MAXINT64_MAX | int8_t，int16_t，int32_t，int64_t（宏常量）类型的对象的最大值|

| INT_FAST8_MAXINT_FAST16_MAXINT_FAST32_MAXINT_FAST64_MAX | int_fast8_t，int_fast16_t，int_fast32_t，int_fast64_t（宏常量）类型的对象的最大值|

| INT_LEAST8_MAXINT_LEAST16_MAXINT_LEAST32_MAXINT_LEAST64_MAX | int_least8_t，int_least16_t，int_least32_t，int_least64_t（宏常量）类型的对象的最大值|

| INTPTR_MAX | intptr_t（宏常量）|类型的对象的最大值

| INTMAX_MAX | intmax_t（宏常量）|类型的对象的最大值

| 无符号整数：最大值|

| UINT8_MAXUINT16_MAXUINT32_MAXUINT64_MAX | 类型为uint8_t，uint16_t，uint32_t，uint64_t（宏常量）的对象的最大值|

| UINT_FAST8_MAXUINT_FAST16_MAXUINT_FAST32_MAXUINT_FAST64_MAX | 类型为uint_fast8_t，uint_fast16_t，uint_fast32_t，uint_fast64_t（宏常量）的对象的最大值|

| UINT_LEAST8_MAXUINT_LEAST16_MAXUINT_LEAST32_MAXUINT_LEAST64_MAX | 类型为uint_least8_t，uint_least16_t，uint_least32_t，uint_least64_t（宏常量）的对象的最大值|

| UINTPTR_MAX | 类型为uintptr_t（宏常量）|的对象的最大值

| UINTMAX_MAX | 类型为uintmax_t（宏常量）|的对象的最大值

最小宽度整数常量的函数宏

INT8_CINT16_CINT32_CINT64_C

展开为一个整数常量表达式，其中具有由其参数指定的值，并且类型分别为int_least8_t，int_least16_t，int_least32_t，int_least64_t（函数宏）

INTMAX_C

展开为具有由其参数指定的值的整型常量表达式和类型intmax_t（函数宏）

UINT8_CUINT16_CUINT32_CUINT64_C

展开为具有由其参数指定的值的整型常量表达式，以及类型分别为uint_least8_t，uint_least16_t，uint_least32_t，uint_least64_t（函数宏）

UINTMAX_C

展开为具有由其参数指定的值的整型常量表达式以及类型uintmax_t（函数宏）

#include <stdint.h>UINT64_C(0x123) // might expand to 0x123ULL or 0x123UL

格式化宏常量

| 在头文件<inttypes.h>中定义 |

|:----|

fprintf为函数族设置常量格式

等价于int orunsigned int

描述

数据类型的宏



uintx_t

uint_leastx_t

uint_fastx_t

uintmax_t型

uintptr_t的

| x = 8,16,32或64 |

| d | 输出一个带符号的十进制整数值| PRIdx | PRIdLEASTx | PRIdFASTx | PRIdMAX | PRIdPTR |

| i | PRIix | PRIiLEASTx | PRIiFASTx | PRIiMAX | PRIiPTR |

| u | 输出一个无符号的十进制整数值| PRIux | PRIuLEASTx | PRIuFASTx | PRIuMAX | PRIuPTR |

| o | 输出一个无符号的八进制整数值| PRIox | PRIoLEASTx | PRIoFASTx | PRIoMAX | PRIoPTR |

| x | 输出一个无符号的小写十六进制整数值| PRIxx | PRIxLEASTx | PRIxFASTx | PRIxMAX | PRIxPTR |

| X | 输出一个无符号的大写十六进制整数值| PRIXx | PRIXLEASTx | PRIXFASTx | PRIXMAX | PRIXPTR |

fscanf为函数族设置常量格式

等价于int orunsigned int

描述

数据类型的宏



uintx_t

uint_leastx_t

uint_fastx_t

uintmax_t型

uintptr_t的

| x = 8,16,32或64 |

| d | 输入一个带符号的十进制整数值| SCNdx | SCNdLEASTx | SCNdFASTx | SCNdMAX | SCNdPTR |

| 我| 输入有符号的整数值（基数由解析的第一个字符决定）| SCNix | SCNiLEASTx | SCNiFASTx | SCNiMAX | SCNiPTR |

| u | 输入一个无符号的十进制整数值| SCNux | SCNuLEASTx | SCNuFASTx | SCNuMAX | SCNuPTR |

| o | 输入一个无符号的八进制整数值| SCNox | SCNoLEASTx | SCNoFASTx | SCNoMAX | SCNoPTR |

| x | 输入一个无符号的十六进制整数值| SCNxx | SCNxLEASTx | SCNxFASTx | SCNxMAX | SCNxPTR |

例

#include <stdio.h>#include <inttypes.h>
 int main(void){    printf("%zu\n", sizeof(int64_t));    printf("%s\n", PRId64);    printf("%+"PRId64"\n", INT64_MIN);    printf("%+"PRId64"\n", INT64_MAX);
 
    int64_t n = 7;    printf("%+"PRId64"\n", n);}

可能的输出：

8lld-9223372036854775808+9223372036854775807+7

扩展内容

  • 算术类型

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