c - 错误: indirection requires pointer operand ('int' invalid)

Question

这段代码的目的是传递一个十进制的虚拟地址并输出页码和偏移量。

在 Linux 上使用 gcc 编译器编译代码后，出现以下错误:

indirection requires pointer operand ('int' invalid) virtualAddress = *atoi(argv[1]);

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include <math.h>
#include <curses.h>

int main(int argc,char *argv[])

{

     unsigned long int virtualAddress,pageNumber,offset;

     if(argc<2){

          printf(" NO ARGUMNET IS PASSED");

          return 0;

     }

    virtualAddress = *atoi(argv[1]);

     //PRINT THE VIRTUAL ADDRESS

    printf("The Address %lu contains:",virtualAddress);

    //CALCULATE THE PAGENUMBER

    pageNumber = virtualAddress/4096;

     //PRINT THE PAGE NUMBER

    printf("\n Page Number = %lu",pageNumber);

    //FIND THE OFFSET

    offset = virtualAddress%4096;

    //PRINTS THE OFFSET

    printf("\n Offset = %lu",offset);

     getch();

    return 0;

}

Answer 1

当您想通过 *my_var 而不是 &my_var 创建指向变量的指针时，会发生此错误。