如何使用int16_t或int32_t與scanf函數

Question

我理解int16_t或int32_t在C中的方式是它們在您的計算機上分別被鍵入16位和32位數字。我相信你會使用這些，當你需要保證一個數字是16或32位，因爲不同的系統並不總是代表一個int 32位或short 16位（這個假設是否正確？我找到混合的答案，當我在網上）。

我的問題是我怎麼會用像scanf的功能從用戶獲取輸入與int16_t或int32_t或任何其他typedef操作數類型的，當我要求他們實際上是16位或32位或什麼？是否有某種特殊的字符串修飾符？通常情況下，如果我想從用戶的int，而無需關心它是如何大的其實是代表我會寫這樣的事情

scanf("%d", &int); 

如果我通過在int32_t，但這個工作我認爲這僅僅是因爲一個我的系統上的int是32位，它並沒有專門給我一個32位數字，而只是給我一個int。如何獲取保證爲32位的數字？我看過this page of string modifiers和其他一些地方，但沒有發現這些typedefed數字類型。

編輯：既然收到我的問題的答案，我已經做了一些谷歌搜索，發現this。我將它列入下面以供參考。

uppercase hexadecimal printf format for uintptr_t 

#define SCNd16 "d" 
decimal scanf format for int16_t 

#define SCNd32 "ld" 
decimal scanf format for int32_t 

#define SCNd8 "hhd" 
decimal scanf format for int8_t 

#define SCNdFAST16 "d" 
decimal scanf format for int_fast16_t 

#define SCNdFAST32 "ld" 
decimal scanf format for int_fast32_t 

#define SCNdFAST8 "hhd" 
decimal scanf format for int_fast8_t 

#define SCNdLEAST16 "d" 
decimal scanf format for int_least16_t 

#define SCNdLEAST32 "ld" 
decimal scanf format for int_least32_t 

#define SCNdLEAST8 "hhd" 
decimal scanf format for int_least8_t 

#define SCNdPTR SCNd16 
decimal scanf format for intptr_t 

#define SCNi16 "i" 
generic-integer scanf format for int16_t 

#define SCNi32 "li" 
generic-integer scanf format for int32_t 

#define SCNi8 "hhi" 
generic-integer scanf format for int8_t 

#define SCNiFAST16 "i" 
generic-integer scanf format for int_fast16_t 

#define SCNiFAST32 "li" 
generic-integer scanf format for int_fast32_t 

#define SCNiFAST8 "hhi" 
generic-integer scanf format for int_fast8_t 

#define SCNiLEAST16 "i" 
generic-integer scanf format for int_least16_t 

#define SCNiLEAST32 "li" 
generic-integer scanf format for int_least32_t 

#define SCNiLEAST8 "hhi" 
generic-integer scanf format for int_least8_t 

#define SCNiPTR SCNi16 
generic-integer scanf format for intptr_t 

#define SCNo16 "o" 
octal scanf format for uint16_t 

#define SCNo32 "lo" 
octal scanf format for uint32_t 

#define SCNo8 "hho" 
octal scanf format for uint8_t 

#define SCNoFAST16 "o" 
octal scanf format for uint_fast16_t 

#define SCNoFAST32 "lo" 
octal scanf format for uint_fast32_t 

#define SCNoFAST8 "hho" 
octal scanf format for uint_fast8_t 

#define SCNoLEAST16 "o" 
octal scanf format for uint_least16_t 

#define SCNoLEAST32 "lo" 
octal scanf format for uint_least32_t 

#define SCNoLEAST8 "hho" 
octal scanf format for uint_least8_t 

#define SCNoPTR SCNo16 
octal scanf format for uintptr_t 

#define SCNu16 "u" 
decimal scanf format for uint16_t 

#define SCNu32 "lu" 
decimal scanf format for uint32_t 

#define SCNu8 "hhu" 
decimal scanf format for uint8_t 

#define SCNuFAST16 "u" 
decimal scanf format for uint_fast16_t 

#define SCNuFAST32 "lu" 
decimal scanf format for uint_fast32_t 

#define SCNuFAST8 "hhu" 
decimal scanf format for uint_fast8_t 

#define SCNuLEAST16 "u" 
decimal scanf format for uint_least16_t 

#define SCNuLEAST32 "lu" 
decimal scanf format for uint_least32_t 

#define SCNuLEAST8 "hhu" 
decimal scanf format for uint_least8_t 

#define SCNuPTR SCNu16 
decimal scanf format for uintptr_t 

#define SCNx16 "x" 
hexadecimal scanf format for uint16_t 

#define SCNx32 "lx" 
hexadecimal scanf format for uint32_t 

#define SCNx8 "hhx" 
hexadecimal scanf format for uint8_t 

#define SCNxFAST16 "x" 
hexadecimal scanf format for uint_fast16_t 

#define SCNxFAST32 "lx" 
hexadecimal scanf format for uint_fast32_t 

#define SCNxFAST8 "hhx" 
hexadecimal scanf format for uint_fast8_t 

#define SCNxLEAST16 "x" 
hexadecimal scanf format for uint_least16_t 

#define SCNxLEAST32 "lx" 
hexadecimal scanf format for uint_least32_t 

#define SCNxLEAST8 "hhx" 
hexadecimal scanf format for uint_least8_t 

#define SCNxPTR SCNx16 
hexadecimal scanf format for uintptr_t 

Answer 1

對於那些需要從inttypes.h如SCNd64或SCNu32等

scanf("%" SCNd32, &x);