Integer constants refer to fixed values defined in programming, which are often used to represent numerical data, such as integers and characters. This fixed value does not change during programming. Integer constants can generally be expressed in decimal, octal or hexadecimal, and can also be signed. When the program is running, if an integer constant is used, the computer will directly read this value and calculate it, thus controlling the behavior of the program.

Integer constants are very important in program development. Because integer constants don't change, you can use them directly when writing code without having to re-enter the calculation every time. This is not only more efficient, but also convenient for code reading and maintenance. For some data that need to be reused, we can define it with constants, which can save a lot of time and energy.

In practical application, integer constants have a wide range of uses. For example, in graphical interface programming, common layout parameters such as window size and button position can be expressed by integer constants, which is convenient for programmers to layout. In the fields of image processing and computer vision, common values such as image size and pixel position can also be expressed by integer constants. In a word, integer constant is an indispensable element in programming and an important basis for program realization.