查看内存

#include<stdio.h>
#include<ctype.h>

typedef unsigned char BYTE;

int main()
{
    unsigned int addr;
    int i,n;
    BYTE *ptr;

    printf("Address of main function: 0x%08x\n",(unsigned int)main);
    printf("Address of addr variable: 0x%08x\n",(unsigned int)&addr);
    printf("\nEnter a (hex)address:0x");
    scanf("%x",&addr);
    printf("Enter number of bytes to view:");
    scanf("%d",&n);

    printf("\n");
    printf("Address                 Bytes                Characters\n");
    printf("----------   -------------------------------  ----------");
    printf("\n");
    ptr=(BYTE*)addr;
    for(;n>0;n-=10)
    {
        printf("0x%08x    ",(unsigned int)ptr);
        for(i=0;i<10 && i<n;i++)
            printf("%.2x ",*(ptr+i));
        for(;i<10;i++)
            printf("  ");
        printf("  ");
        for(i=0;i<10 && i<n;i++)
        {
            BYTE ch=*(ptr+i);
            if(!isprint(ch))
                ch='.';
            printf("%c",ch);
        }

        printf("\n");
        ptr+=10;
    }


    return 0;
}