"C语言编程练习：输入输出操作练习题目解析"

The C programming language is a powerful tool for creating efficient and effective software programs. In order to become proficient in C programming, it is important to practice writing code and solving problems. One way to do this is by completing exercises that challenge your understanding of key concepts. In the "C语言编程练习.pptx" presentation, there is a Chapter 4 titled "Managing Input and Output Operations" that introduces various exercises to help improve your programming skills. One specific exercise in this chapter tasks you with writing a program to read the values of x and y and print the results of certain mathematical expressions. The exercise requires you to write a program that prompts the user to input the values of x and y. Once the values are entered, the program should calculate and output the results of the following expressions: 1. x + y 2. x - y 3. (x + y)(x - y) 4. x + y/2 To solve this exercise, you will need to declare two float variables, x and y, to store the user input. You will also need to use the printf and scanf functions to prompt the user for input and read the values of x and y, respectively. Once you have obtained the values of x and y, you can then perform the necessary calculations using arithmetic operators such as +, -, * and /. Finally, you can use the printf function to display the results of the calculations in a clear and concise manner. By completing exercises like this one, you can improve your understanding of C programming concepts and enhance your problem-solving skills. Practice is key to mastering any programming language, and by regularly working on exercises like the one described above, you can build your confidence and proficiency in C programming. Remember to experiment with different approaches and techniques, and don't be afraid to make mistakes – they are a valuable learning opportunity. Keep practicing, keep learning, and soon you will become a skilled C programmer!