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c语言中的数据类型
"数据类型": {
"基本数据类型":{
//%d 以整数型输出
"整型":{
//int 4字节 -2147483648~2147483647
"带符号整型":{
"带符号整型", signed [int] 4字节 -2147483648~2147483647
"带符号短整型", signed short [int] 2
"带符号长整型" signed long [int] 4
},
"无符号整型":{
"无符号整型", unsigned [int] 4
"无符号短整型", unsigned short [int] 4
"无符号长整型" unsigned long [int] 4
}
},
"实数型":{
"单精度型", float 4 有效数字:6~7
"双精度型", double 8 15~16
"长双精度" long double 16 18~19
},
"字符串":{},
"字符型":{ %c 以字符型输出
//在c中,字符具有数值性质,带符号字符和无符号字符能够参与到整型数据的运算中
//字符参与运算相当于对字符的ASCII码值进行运算
字节数
"字符型", char 1 -128~127
"带符号字符型", signed char 1 -128~127
"无符号字符型" unsigned char 1 0~255
字符型常量:由一堆对单引号括起来的单个字符,
//字符常量的值为该字符的ASCII码值,小写字符值小于大写字符值
转义字符:
}
},
"构造型": {
"数组型",
"结构型",
"共用型",
"枚举型"
},
"指针类型": {},
"空类型": {}
}