int float double 最值

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int float double 最大值，最小值2009-09-18 08:58http://hi.baidu.com/cat_ng/blog/item/1131a4c2af0ea6120ef477db.html1. 显示整型(int)的最小、最大值: #include　#include　int　main(void){int　n1,n2;　　n1　=　INT_MIN;n2　=　INT_MAX;printf("%d　..　%d",　n1,n2);getchar();return　0;}　　2. 显示单精度类型(float)的最小、最大值:#include　#include　int　main(void){float　f1　=　FLT_MIN;float　f2　=　FLT_MAX;printf("%e　..　%e ",　f1,f2);getchar();return　0;}　　3. 显示双精度类型(double)的最小、最大值:#include　#include　int　main(void){double　d1　=　DBL_MIN;double　d2　=　DBL_MAX;printf("%e　..　%e ",　d1,d2);getchar();return　0;}附：/Microsoft Visual Studio/VC98/Include/LIMITS.H中定义的：#define MB_LEN_MAX 2 /* max. # bytes in multibyte char */#define SHRT_MIN (-32768) /* minimum (signed) short value */#define SHRT_MAX 32767 /* maximum (signed) short value */#define USHRT_MAX 0xffff /* maximum unsigned short value */#define INT_MIN (-2147483647 - 1) /* minimum (signed) int value */#define INT_MAX 2147483647 /* maximum (signed) int value */#define UINT_MAX 0xffffffff /* maximum unsigned int value */#define LONG_MIN (-2147483647L - 1) /* minimum (signed) long value */#define LONG_MAX 2147483647L /* maximum (signed) long value */#define ULONG_MAX 0xffffffffUL /* maximum unsigned long value */#if _INTEGRAL_MAX_BITS >= 8#define _I8_MIN (-127i8 - 1) /* minimum signed 8 bit value */#define _I8_MAX 127i8 /* maximum signed 8 bit value */#define _UI8_MAX 0xffui8 /* maximum unsigned 8 bit value */#endif#if _INTEGRAL_MAX_BITS >= 16#define _I16_MIN (-32767i16 - 1) /* minimum signed 16 bit value */#define _I16_MAX 32767i16 /* maximum signed 16 bit value */#define _UI16_MAX 0xffffui16 /* maximum unsigned 16 bit value */#endif#if _INTEGRAL_MAX_BITS >= 32#define _I32_MIN (-2147483647i32 - 1) /* minimum signed 32 bit value */#define _I32_MAX 2147483647i32 /* maximum signed 32 bit value */#define _UI32_MAX 0xffffffffui32 /* maximum unsigned 32 bit value */#endif#if _INTEGRAL_MAX_BITS >= 64/* minimum signed 64 bit value */#define _I64_MIN (-9223372036854775807i64 - 1)/* maximum signed 64 bit value */#define _I64_MAX 9223372036854775807i64/* maximum unsigned 64 bit value */#define _UI64_MAX 0xffffffffffffffffui64#endif#if _INTEGRAL_MAX_BITS >= 128/* minimum signed 128 bit value */#define _I128_MIN (-170141183460469231731687303715884105727i128 - 1)/* maximum signed 128 bit value */#define _I128_MAX 170141183460469231731687303715884105727i128/* maximum unsigned 128 bit value */#define _UI128_MAX 0xffffffffffffffffffffffffffffffffui128#endif/Microsoft Visual Studio/VC98/Include/FLOAT.H中定义：#define DBL_DIG 15 /* # of decimal digits of precision */#define DBL_EPSILON 2.2204460492503131e-016 /* smallest such that 1.0+DBL_EPSILON != 1.0 */#define DBL_MANT_DIG 53 /* # of bits in mantissa */#define DBL_MAX 1.7976931348623158e+308 /* max value */#define DBL_MAX_10_EXP 308 /* max decimal exponent */#define DBL_MAX_EXP 1024 /* max binary exponent */#define DBL_MIN 2.2250738585072014e-308 /* min positive value */#define DBL_MIN_10_EXP (-307) /* min decimal exponent */#define DBL_MIN_EXP (-1021) /* min binary exponent */#define _DBL_RADIX 2 /* exponent radix */#define _DBL_ROUNDS 1 /* addition rounding: near */#define FLT_DIG 6 /* # of decimal digits of precision */#define FLT_EPSILON 1.192092896e-07F /* smallest such that 1.0+FLT_EPSILON != 1.0 */#define FLT_GUARD 0#define FLT_MANT_DIG 24 /* # of bits in mantissa */#define FLT_MAX 3.402823466e+38F /* max value */#define FLT_MAX_10_EXP 38 /* max decimal exponent */#define FLT_MAX_EXP 128 /* max binary exponent */#define FLT_MIN 1.175494351e-38F /* min positive value */#define FLT_MIN_10_EXP (-37) /* min decimal exponent */#define FLT_MIN_EXP (-125) /* min binary exponent */#define FLT_NORMALIZE 0#define FLT_RADIX 2 /* exponent radix */#define FLT_ROUNDS 1 /* addition rounding: near */#ifndef _M_M68K#define LDBL_DIG DBL_DIG /* # of decimal digits of precision */#define LDBL_EPSILON DBL_EPSILON /* smallest such that 1.0+LDBL_EPSILON != 1.0 */#define LDBL_MANT_DIG DBL_MANT_DIG /* # of bits in mantissa */#define LDBL_MAX DBL_MAX /* max value */#define LDBL_MAX_10_EXP DBL_MAX_10_EXP /* max decimal exponent */#define LDBL_MAX_EXP DBL_MAX_EXP /* max binary exponent */#define LDBL_MIN DBL_MIN /* min positive value */#define LDBL_MIN_10_EXP DBL_MIN_10_EXP /* min decimal exponent */#define LDBL_MIN_EXP DBL_MIN_EXP /* min binary exponent */#define _LDBL_RADIX DBL_RADIX /* exponent radix */#define _LDBL_ROUNDS DBL_ROUNDS /* addition rounding: near */#else#define LDBL_DIG 18 /* # of decimal digits of precision */#define LDBL_EPSILON 1.08420217248550443412e-019L /* smallest such that 1.0+LDBL_EPSILON != 1.0 */#define LDBL_MANT_DIG 64 /* # of bits in mantissa */#define LDBL_MAX 1.189731495357231765e+4932L /* max value */#define LDBL_MAX_10_EXP 4932 /* max decimal exponent */#define LDBL_MAX_EXP 16384 /* max binary exponent */#define LDBL_MIN 3.3621031431120935063e-4932L /* min positive value */#define LDBL_MIN_10_EXP (-4931) /* min decimal exponent */#define LDBL_MIN_EXP (-16381) /* min binary exponent */#define _LDBL_RADIX 2 /* exponent radix */#define _LDBL_ROUNDS 1 /* addition rounding: near */#endif