c 语言计算数据占用字节数完整代码示例

下面是一个计算数据类型占用字节数的C语言程序示例：

#include <stdio.h>

int main()
{
    printf("Size of char: %d byte(s)\n", sizeof(char));
    printf("Size of int: %d byte(s)\n", sizeof(int));
    printf("Size of short: %d byte(s)\n", sizeof(short));
    printf("Size of long: %d byte(s)\n", sizeof(long));
    printf("Size of long long: %d byte(s)\n", sizeof(long long));
    printf("Size of float: %d byte(s)\n", sizeof(float));
    printf("Size of double: %d byte(s)\n", sizeof(double));
    printf("Size of long double: %d byte(s)\n", sizeof(long double));

    return 0;
}

该程序使用 `sizeof` 运算符来计算并打印出常见数据类型占用的字节数。运行该程序将输出类似如下的结果：

Size of char: 1 byte(s)
Size of int: 4 byte(s)
Size of short: 2 byte(s)
Size of long: 8 byte(s)
Size of long long: 8 byte(s)
Size of float: 4 byte(s)
Size of double: 8 byte(s)
Size of long double: 16 byte(s)