#include
int main(void)
{
float x;
printf("%dn",sizeof(short)); 输出字节数2
printf("%dn",sizeof(x)); 输出字节数4
printf("%dn",sizeof(‘x’)); 输出字节数1
printf("%dn",sizeof(2)); 输出字节数4
printf("%dn"sizeof(2+3.14)); 输出字节数8
}

#include
int main(void)
{
float x;
printf("%dn",sizeof(short)); 输出字节数2
printf("%dn",sizeof(x)); 输出字节数4
printf("%dn",sizeof(‘x’)); 输出字节数1
printf("%dn",sizeof(2)); 输出字节数4
printf("%dn"sizeof(2+3.14)); 输出字节数8
}