Home>Article> What is the difference between ++a and a++ in c language

What is the difference between ++a and a++ in c language

小老鼠
小老鼠 Original
2024-03-26 10:04:55 677browse

Difference: The prefix increment operator "a" first increases the value of variable a by 1, and then returns the increased value, while "a" first returns the current value of variable a, and then increases a by 1. This difference in return value timing leads to differences in usage scenarios of the two increment operators.

What is the difference between ++a and a++ in c language

In C language, a and a are two different usages of the increment operator, and they have obvious differences.

a (prefix increment): First increase the value of variable a by one, and then return the increased value. It can also be said that in the current expression, a returns the incremented value.

Sample code:

int a = 5;int b = a; // First add one to a, and then assign the increased value to b// Now the value of a is 6 , the value of b is also 6
a (suffix increasing): first return the current value of variable a, and then add one to a. It can also be said that in the current expression, a returns the original value, and then a is increased by one.

Sample code:

int a = 5;int b = a; // First assign the value of a to b, then add one to a // Now the value of a is 6 , the value of b is 5

To sum up, the difference between a and a is that the timing of returning the value is different: prefix increment first increments and then returns the value, while suffix increment first returns the value and then increments.

The above is the detailed content of What is the difference between ++a and a++ in c language. For more information, please follow other related articles on the PHP Chinese website!

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn