写出下面程序的功能。func(int n){ int i,j,k;i=n/100; j=n/10-i*10; k=n%10;if((i*100 j*10 k)==（i*i*i j*j*j k*k*k）)return n;return 0;}main(){ int n;for(n=100; n<1000; n )if(n==func(n)) printf("%d",n);}