3例子:/* Program 2.11 Finding the limits */#include /* For command line input and output */#include < limits.h > /* For limits on integer types */#include /* 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