Integer Output Scanning

Defines macros for converting integer types to formatted text.

The inttypes.h header file defines macros that expand to a literal character string that forms a conversion specifier suitable for use with formatted output functions.

The table below lists the macros that expand to conversion specifiers for output.

Table 1. Integer Conversion Specifiers for Output
Type	Format	Macro
`int8_t`	decimal	`PRId8` `or` `PRIi8`
`int16_t`	decimal	`PRId16` `or` `PRIi16`
`int32_t`	decimal	`PRId32` `or` `PRIi32`
`int64_t`	decimal	`PRId64` `or` `PRIi64`
`int_least8_t`	decimal	`PRIdLEAST8` `or` `PRIiLEAST8`
`int_least16_t`	decimal	`PRIdLEAST16` `or` `PRIiLEAST16`
`int_least32_t`	decimal	`PRIdLEAST32` `or` `PRIiLEAST32`
`int_least64_t`	decimal	`PRIdLEAST64` `or` `PRIiLEAST64`
`int_fast8_t`	decimal	`PRIdFAST8` `or` `PRIiFAST8`
`int_fast16_t`	decimal	`PRIdFAST16` `or` `PRIiFAST16`
`int_fast32_t`	decimal	`PRIdFAST32` `or` `PRIiFAST32`
`int_fast64_t`	decimal	`PRIdFAST64` `or` `PRIiFAST64`
`intmax_t`	decimal	`PRIdMAX` `or` `PRIiMAX`
`intptr_t`	decimal	`PRIdPTR` `or` `PRIiPTR`
`int8_t`	unsigned octal	`PRIo8`
`int16_t`	unsigned octal	`PRIo16`
`int32_t`	unsigned octal	`PRIo32`
`int64_t`	unsigned octal	`PRIo64`
`int_least8_t`	unsigned octal	`PRIoLEAST8`
`int_least16_t`	unsigned octal	`PRIoLEAST16`
`int_least32_t`	unsigned octal	`PRIoLEAST32`
`int_least64_t`	unsigned octal	`PRIoLEAST64`
`int_fast8_t`	unsigned octal	`PRIoFAST8`
`int_fast16_t`	unsigned octal	`PRIoFAST16`
`int_fast32_t`	unsigned octal	`PRIoFAST32`
`int_fast64_t`	unsigned octal	`PRIoFAST64`
`intmax_t`	unsigned octal	`PRIoMAX`
`intptr_t`	unsigned octal	`PRIoPTR`
`int8_t`	unsigned decimal	`PRIu8`
`int16_t`	unsigned decimal	`PRIu16`
`int32_t`	unsigned decimal	`PRIu32`
`int64_t`	unsigned decimal	`PRIu64`
`int_least8_t`	unsigned decimal	`PRIuLEAST8`
`int_least16_t`	unsigned decimal	`PRIuLEAST16`
`int_least32_t`	unsigned decimal	`PRIuLEAST32`
`int_least64_t`	unsigned decimal	`PRIuLEAST64`
`int_fast8_t`	unsigned decimal	`PRIuFAST8`
`int_fast16_t`	unsigned decimal	`PRIuFAST16`
`int_fast32_t`	unsigned decimal	`PRIuFAST32`
`int_fast64_t`	unsigned decimal	`PRIuFAST64`
`intmax_t`	unsigned decimal	`PRIuMAX`
`intptr_t`	unsigned decimal	`PRIuPTR`
`int8_t`	unsigned hexadecimal	`PRIx8`
`int16_t`	unsigned hexadecimal	`PRIx16`
`int32_t`	unsigned hexadecimal	`PRIx32`
`int64_t`	unsigned hexadecimal	`PRIx64`
`int_least8_t`	unsigned hexadecimal	`PRIxLEAST8`
`int_least16_t`	unsigned hexadecimal	`PRIxLEAST16`
`int_least32_t`	unsigned hexadecimal	`PRIxLEAST32`
`int_least64_t`	unsigned hexadecimal	`PRIxLEAST64`
`int_fast8_t`	unsigned hexadecimal	`PRIxFAST8`
`int_fast16_t`	unsigned hexadecimal	`PRIxFAST16`
`int_fast32_t`	unsigned hexadecimal	`PRIxFAST32`
`int_fast64_t`	unsigned hexadecimal	`PRIxFAST64`
`intmax_t`	unsigned hexadecimal	`PRIxMAX`
`intptr_t`	unsigned hexadecimal	`PRIxPTR`
`int8_t`	unsigned hexadecimal with uppercase letters	`PRIX8`
`int16_t`	unsigned hexadecimal with uppercase letters	`PRIX16`
`int32_t`	unsigned hexadecimal with uppercase letters	`PRIX32`
`int64_t`	unsigned hexadecimal with uppercase letters	`PRIX64`
`int_least8_t`	unsigned hexadecimal with uppercase letters	`PRIXLEAST8`
`int_least16_t`	unsigned hexadecimal with uppercase letters	`PRIXLEAST16`
`int_least32_t`	unsigned hexadecimal with uppercase letters	`PRIXLEAST32`
`int_least64_t`	unsigned hexadecimal with uppercase letters	`PRIXLEAST64`
`int_fast8_t`	unsigned hexadecimal with uppercase letters	`PRIXFAST8`
`int_fast16_t`	unsigned hexadecimal with uppercase letters	`PRIXFAST16`
`int_fast32_t`	unsigned hexadecimal with uppercase letters	`PRIXFAST32`
`int_fast64_t`	unsigned hexadecimal with uppercase letters	`PRIXFAST64`
`intmax_t`	unsigned hexadecimal with uppercase letters	`PRIXMAX`
`intptr_t`	unsigned hexadecimal with uppercase letters	`PRIXPTR`

Listing: Example of Integer Output


#include <stdio.h> 
#include <inttypes.h> 
int main(void) 
{ 
intmax_t im = 175812759L; 
printf("%" PRId8 "\n", 63); 
printf("%" PRIxMAX, im); 
return 0; 
} 
Output: 
63 
0xa7ab097