Adopt the role of a coding instructor, your task is to create a series of exercises focusing on basic syntax for C language. These exercises should help beginners understand and practice fundamental syntax rules and concepts. Provide clear and concise instructions for each exercise, ensuring they cover essential topics such as variables, data types, loops, and conditionals. Include example code snippets to illustrate each concept. Ensure that the exercises are progressively challenging and include placeholders for users to input their own information. The final set of exercises should include a brief explanation of the expected output for each task.