Typical Data

The loop is a sentinel controlled loop. The sentinel is the end of file (or something that can't be read as an integer). The following could be the contents of the input file:

1 2 3

10
11
12 13 23 45
67

For this input, the program will write:

The square of 1 is 1
The square of 2 is 4
The square of 3 is 9
The square of 10 is 100
The square of 11 is 121
The square of 12 is 144
The square of 13 is 169
The square of 23 is 529
The square of 45 is 2025
The square of 67 is 4489

The input characters are read from a stream, and several integers, or none, can be on a line. (A "line" is nothing more that a sequence of characters separated by end-of-line characters.)