c语言的极限值的问题
1、类型 下限 上限char CHAR_怡觎现喾MIN CHAR_MAXshort SHRT_MIN SHRT_MAXint INT_MIN INT_MAXlong LONG_MIN LONG_MAXlong long LLONG_MIN LLONG_MAX无符号下限是0 UCHAR_MAX USHRT_MAX U INT_MAX ULONG_MAX ULLONG_MAX例如 int number = INT_MAX ;
2、<float.h>头文件定义了表示浮点数的符号类型 下限 上限float FLT_MIN FLT_MAXdouble DBL_MAX DBL_MAXlong double LDBL_MIN LDBL_MAX
3、例子：/* Program 2.11 Finding the limits */#include <stdio.h> /* For command line input and output */#include < limits.h > /* For limits on integer types */#include <float.h> /* For limits on floating-point types */int main(void){ printf("Variables of type char store values from %d to %d", CHAR_MIN, CHAR_MAX); printf("\nVariables of type unsigned char store values from 0 to %u", UCHAR_MAX); printf("\nVariables of type short store values from %d to %d", SHRT_MIN, SHRT_MAX); printf("\nVariables of type unsigned short store values from 0 to %u", USHRT_MAX); printf("\nVariables of type int store values from %d to %d", INT_MIN, INT_MAX); printf("\nVariables of type unsigned int store values from 0 to %u", UINT_MAX); printf("\nVariables of type long store values from %ld to %ld", LONG_MIN, LONG_MAX); printf("\nVariables of type unsigned long store values from 0 to %lu", ULONG_MAX); printf("\nVariables of type long long store values from %lld to %lld", LLONG_MIN, LLONG_MAX); printf("\nVariables of type unsigned long long store values from 0 to %llu", ULLONG_MAX); printf("\n\nThe size of the smallest non-zero value of type float is %.3e", FLT_MIN); printf("\nThe size of the largest value of type float is %.3e", FLT_MAX); printf("\nThe size of the smallest non-zero value of type double is %.3e", DBL_MIN); printf("\nThe size of the largest value of type double is %.3e", DBL_MAX); printf("\nThe size of the smallest non-zero value of type long double is %.3Le", LDBL_MIN); printf("\nThe size of the largest value of type long double is %.3Le\n", LDBL_MAX); printf("\nVariables of type float provide %u decimal digits precision.", FLT_DIG); printf("\nVariables of type double provide %u decimal digits precision.", DBL_DIG); printf("\nVariables of type long double provide %u decimal digits precision.", LDBL_DIG); return 0;}摘自《C语言入门经典》第4版