Final answer:
After the statement is executed, the variable string1 will contain 'January' and the variable string2 will contain '25,'.
Step-by-step explanation:
After the statement cin >> string1 >> string2;, the first word in the input data, 'January', will be stored in the variable string1. The second word in the input data, '25,', will be stored in the variable string2. However, please note that the comma (',') will be included as part of the string stored in string2.