原文: https://www.programiz.com/c-programming/examples/sizeof-operator-example
要理解此示例,您应该了解以下 C 编程主题:
#include<stdio.h>
int main() {
int intType;
float floatType;
double doubleType;
char charType;
// sizeof evaluates the size of a variable
printf("Size of int: %ld bytes\n", sizeof(intType));
printf("Size of float: %ld bytes\n", sizeof(floatType));
printf("Size of double: %ld bytes\n", sizeof(doubleType));
printf("Size of char: %ld byte\n", sizeof(charType));
return 0;
} 输出
Size of int: 4 bytes
Size of float: 4 bytes
Size of double: 8 bytes
Size of char: 1 byte 在该程序中,声明了 4 个变量intType,floatType,doubleType和charType。
然后,使用sizeof运算符计算每个变量的大小。