整数、有理数、整数、实数、复数、向量、字符等
对于机器硬件来说,数据是以一串二进制位0和1的形式编码的。在机器中,整数数据在算术逻辑单元(alu)中处理,分数数据在浮点数单元(fpu)中处理。这反映在高级语言的内置或原始数据类型中。
内置数据类型c语言中有不同的内置数据类型,其中一些如下所示:
int、float、char、unsigned int、unsigned char、long int、double等
数据的使用在c语言中,可以使用不同的类型以不同的方式存储数据。下面是一些示例:
char string, grade=’a’;int count, index=10;float average=6.9;在上面的示例中,char、int、float是内置数据类型,而string、grade是char类型的变量。
grade=’a’将变量grade初始化为字符‘a’的字符代码。
count和index是int类型的变量。
而index=10将变量初始化为二进制表示的10。
示例下面是一个c程序,用于查找变量和内置数据类型的大小:
live demo
#include<stdio.h>int main(){ int x = 10; char c; printf("size of variable x = %ld bytes
",sizeof(x)); printf("size of variable c = %ld byte
",sizeof(c)); printf("size of short is %ld bytes
",sizeof(short)); printf("size of int is %ld bytes
",sizeof(int)); printf("size of long is %ld bytes
",sizeof(long)); printf("size of float is %ld bytes
",sizeof(float)); printf("size of double is %ld bytes
",sizeof(double)); printf("size of long double is %ld bytes
",sizeof(long double)); printf("size of char is %ld bytes
",sizeof(char)); printf("size of void is %ld bytes
",sizeof(void)); return 0;}
输出当执行上述程序时,会产生以下结果 -
size of variable x = 4 bytessize of variable c = 1 bytesize of short is 2 bytessize of int is 4 bytessize of long is 4 bytessize of float is 4 bytessize of double is 8 bytessize of long double is 16 bytessize of char is 1 bytessize of void is 1 bytes
以上就是c语言中有哪些不同类型的数据?的详细内容。