C 语言中int, float, double 和 char 字节大小
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使用 sizeof 操作符计算int, float, double 和 char四种变量字节大小。
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sizeof 是 C 语言的一种单目操作符,并不是函数。
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sizeof 操作符以字节形式给出了其操作数的存储大小。
#include <stdio.h>
int main()
{
int intx;
float floatx;
double doublex;
char charx;
// sizeof 操作符用于计算变量的字节大小
printf("Size of int: %ld bytes\n",sizeof(intx));
printf("Size of float: %ld bytes\n",sizeof(floatx));
printf("Size of double: %ld bytes\n",sizeof(doublex));
printf("Size of char: %ld byte\n",sizeof(charx));
return 0;
}
计算 long long, long double 字节大小
#include <stdio.h>
int main()
{
int a;
long b;
long long c;
double e;
long double f;
printf("Size of int = %ld bytes \n", sizeof(a));
printf("Size of long = %ld bytes\n", sizeof(b));
printf("Size of long long = %ld bytes\n", sizeof(c));
printf("Size of double = %ld bytes\n", sizeof(e));
printf("Size of long double = %ld bytes\n", sizeof(f));
return 0;
}