C语言关键字sizeof

C语言关键字sizeof

int length01 =sizeof(int);

printf("length01 is: %d\n", length01);

int length02 =sizeof length01;

printf("length02 is: %d\n", length02);

int length03 =sizeof(length01);

printf("length03 is: %d\n", length03);

sizeof关键字后面跟变量名时，原括号可以省略；

sizeof关键字后面跟数据类型时，原括号不可省略；