参考实现代码如下：

#include<stdio.h>      
#include<conio.h>      
main()      
{      
    int n,r,sum=0,temp;    //declaration of variables.  
    clrscr(); //It clears the screen.     
    printf("enter the number=");      
    scanf("%d",&n);      
    temp=n;      
    while(n>0)      
    {      
        r=n%10;      
        sum=sum+(r*r*r);      
        n=n/10;      
    }      
    if(temp==sum)      
        printf("armstrong  number ");      
    else      
        printf("not armstrong number");      
    getch();  //It reads a character from the keyword.  
}