(表C+语言的基本数据类型】 类型 长度(字节) 取值范围 bool false(o) true chat 128~127 signed char -128~127 unsigned char 0~255 short int (short) 11122 -32768~32767 signed short int (signed short) 32768~32767 unsigned short int (unsigned short) 2 0≈65535 int -2147483648~2147483647 signed int -21474836418347 unsigned int 0~4294967295 long int (long) 2147483648~214748364 signed long int (signed long) 2147483648~2147483647 unsigned long int(unsigned int) 0≈4294967295 float 444444488 3.4E-38~3.4E+38 double 1.7E-308~1.7E+308 long double 17E-308~17E+308类型 长度（字节） 取值范围 bool 1 false（0） true（1） char unsigned char signed char short int（short） signed short int（signed short） unsigned short int（unsigned short） int 1 1 1 2 2 2 4 -128～127 0～255 -128～127 -32768～32767 -32768～32767 0～65535 -2147483648～2147483647 signed int unsigned int signed long int（signed long） long int（long） unsigned long int（unsigned int） float double long double -2147483648～2147483647 0～4294967295 -2147483648～2147483647 -2147483648～2147483647 0～4294967295 3.4E-38～3.4E+38 1.7E-308～1.7E+308 1.7E-308～1.7E+308 4 4 4 4 4 4 8 8 【表 C++语言的基本数据类型】