Question

design an algorithm that will display to the screen the first 20 numbers, with their squares and cubes, as follows:

Answer 1

#include <iostream>

using namespace std;

int main()
{
cout<<"Number\tSquare\tCube"<<endl;
for(int i=1;i<=20;i++) {
cout<<i<<"\t"<<i*i<<"\t"<<i*i*i<<endl;
}
return 0;
}

Output:

$g++ -o main *.cpp
$main
Number  Square  Cube
1       1       1
2       4       8
3       9       27
4       16      64
5       25      125
6       36      216
7       49      343
8       64      512
9       81      729
10      100     1000
11      121     1331
12      144     1728
13      169     2197
14      196     2744
15      225     3375
16      256     4096
17      289     4913
18      324     5832
19      361     6859
20      400     8000