C语言中计算变量占用内存空间

时间:2023-03-08 23:15:58
C语言中计算变量占用内存空间

C语言中计算变量占用内存空间

在C语言中通常用【sizeof】运算符计算变量占内存空间,如下面的例子:

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#include <stdio.h>
#include <stdlib.h>
int main()
{
char ch;
short a;
int b;
long c ;
double e;
float d;
//赋值
ch = 'a';
a = ;
b = ;
c= ;
d = 1.5;
e = 1.5; printf("%d\n",sizeof(char));
printf("%d\n",sizeof(short));
printf("%d\n",sizeof(int));
printf("%d\n",sizeof(long));
printf("%d\n",sizeof(float));
printf("%d\n",sizeof(double)); printf("%d\n",sizeof(ch));
printf("%d\n",sizeof(a));
printf("%d\n",sizeof(b));
printf("%d\n",sizeof(c));
printf("%d\n",sizeof(d));
printf("%d\n",sizeof(e));
system("pause");
return ;
}