Transitions control how text and other objects come onto and exit from the screen

Which of the following declarations correctly creates a c-string that can hold the value "phonebook"

a. char s1; b. char s1[9]; c. char s1=10; d. char s1[10];

Which one of the following has restrictions on its use that are delineated by copyright, patent, or license agreement?

A. Public domain software B. Proprietary software C. Open source software D. Demoware