Example of auto-increment or auto-increment: Similarities and Differences between I ++ and ++ I

# Include <stdio. h> main (I = j =; k = I ++; m = ++ j; printf (

Auto-increment or auto-increment can be divided into two types:

• I ++ ----> post auto-Increment
• ++ I ----> auto-Increment

Their similarities are that, whether post-auto-increment or pre-auto-increment, the I value is increased by 1.

In the above Code, I = j = 3, and the values of I and j are both 3. No matter ++ j or I ++, the final value adds 1 to the value of I or j, therefore, the output result is: I = 4; j = 4;

Differences:

The value of post-auto-incrementing I ++ is the value before I + 1, and the value of pre-incrementing ++ I is the value after I + 1;

In the above Code

K = I ++, I ++ is post-auto-increment, k is equal to the value before I + 1, I is 4, and I is 3 before I + 1, so k = 3

M = ++ j, ++ j is the First Auto-increment, and the value of j is equal to the value after j + 1, so m = 4, the value after j + 1 is 4