C :

#include<stdio.h>
void main()
{int i,j,k,a;
for(i=1;i<10;i++)
for(j=0;j<10;j++)
for(k=0;k<10;k++)
if(i*i*i+j*j*j+k*k*k==100*i+10*j+k)
{a=100*i+10*j+k;
printf("%d\n",a);}
}

C++ :

#include<iostream>
#include<cstdio>
#include<iostream>
#include<cmath>

using namespace std;

int main(){
    for(int i=100;i<1000;i++){
        int x = i % 10;
        int y = i / 10 % 10;
        int z = i / 100;
        if(x*x*x+y*y*y+z*z*z == i)
            cout<<i<<endl;
    }
    return 0;
}

Pascal :

var i,a,b,c:longint;
begin
 for i:=100 to 999 do
  begin
   a:=i div 100;
   b:=i div 10 mod 10;
   c:=i mod 10;
   if i=a*a*a+b*b*b+c*c*c then
    writeln(i);
  end;
end.