How to write input and output statements in c++

Input and output are performed through cin and cout in C. Input uses cin >> to read data from standard input according to the specified data type. Output uses cout << to write data to standard output according to the specified data type.

Input and output statements in C

Get straight to the point:
Used in C cin and cout keywords for input and output.

Detailed answer:

Input (cin function):

• cin >>: Read data from standard input (usually the keyboard).

• Data type: Specify the data type of the variable to read data from, such as int, float or string.

Example:

int age;
cin >> age;  // 从键盘读取年龄并将其存储在 age 变量中

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Output (cout function):

• cout <<: Write data to standard output (usually a terminal or console).
• Insertion operator (<<): Insert data into the output stream.
• Data type: Specify the type of output data.

Example:

cout << "你的年龄是：" << age << "\n"; // 在终端上输出 "你的年龄是：" 和 age 的值，后面换行

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Notes:

• cin and cout are objects, so they can be redirected to files or network streams.
• cin and cout can be used with format specifiers to control the output format.
• Input and output operations can be chained together to create complex operations.

Example (link input and output):

int x, y;
cout << "输入两个数字：" << flush; // 提示用户输入两个数字并刷新输出缓冲区
cin >> x >> y; // 读取两个数字
cout << "它们的和是：" << x + y << "\n"; // 输出数字的和