C++ User Input

C++ User Input

ຄຳສັ່ງຮັບຂໍ້ມູນຈາກແປ້ນພິມ

C++ User Input

You have already learned that cout is used to output (print) values. Now we will use cin to get user input.

cin is a predefined variable that reads data from the keyboard with the extraction operator (>>).

In the following example, the user can input a number, which is stored in the variable x. Then we print the value of x:

Fill in the Blank

ຈົ່ງຂຽນຄຳສັ່ງຮັບຂໍ້ມູນຈາກແປ້ນພິມຂອງພາສາ C++

Example

C++ User Input

Good To Know

• cout is pronounced "see-out". Used for output, and uses the insertion operator (<<)

• cin is pronounced "see-in". Used for input, and uses the extraction operator (>>)

Fill in the Blank

ຈົ່ງຂຽນຄຳສັ່ງສະແດງຜົນ output ຂອງພາສາ C++

Fill in the Blank

ຈົ່ງຂຽນ operator (ຕົວນຳເນີນການ) output ຂອງພາສາ C++

Fill in the Blank

ຈົ່ງຂຽນ operator (ຕົວນຳເນີນການ) input ຂອງພາສາ C++

Creating a Simple Calculator

In this example, the user must input two numbers. Then we print the sum by calculating (adding) the two numbers:

Poll

ໃຫ້ຄະແນນຄວາມຍາກຂອງຫົວຂໍ້ User Input

• ງ່າຍ

• ທຳມະດາ

• ຍາກ

• ຍາກຫຼາຍ