c 语言 数据类型

char1 个字节-128 到 127 或者 0 到 255unsigned char1 个字节0 到 255signed char1 个字节-128 到 127int4 个字节-2147483648 到 2147483647unsigned int4 个字节0 到 4294967295signed int4 个字节-2147483648 到 2147483647short int2 个字节-32768 到 32767unsigned short int2 个字节0 到 65,535signed short int2 个字节-32768 到 32767long int8 个字节-9,223,372,036,854,775,808 到 9,223,372,036,854,775,807signed long int8 个字节-9,223,372,036,854,775,808 到 9,223,372,036,854,775,807unsigned long int8 个字节0 to 18,446,744,073,709,551,615float4 个字节+/- 3.4e +/- 38 (~7 个数字)double8 个字节+/- 1.7e +/- 308 (~15 个数字)long double8 个字节+/- 1.7e +/- 308 (~15 个数字)wchar_t2 或 4 个字节1 个宽字符