pre and post increment C and C++

i++ shows that the value of i is post incremented after operation, ++i shows that its pre incremented before operation.

Example

#include<stdio.h>
int main()
{
    int i = 5;
 
    //--------------------------------
    //--------POST INCREMENT----------
    printf("5 because of post increment : %d\n", i++);
    printf("6 because value incremented above : %d\n",i);
 
    // execution from left to right, this will output 6 7 8
     printf("%d %d %d\n",i++ ,i++ ,i++);
 
    // output 9
    printf("output 9 : %d\n",i);
 
    //--------------------------------
    //--------PRE INCREMENT----------
    printf("10 because of pre increment : %d\n",++i);
    printf("10 because same : %d\n",i);
 
    // execution from left to right, this will output 10 11 12
    printf("%d %d %d\n", ++i,++i,++i);
 
    // output 9
    printf("output 13 : %d\n",i);
 
    getchar();
    return 0;
}

Output

5 because of post increment : 5
6 because value incremented above : 6
8 7 6
output 9 : 9
10 because of pre increment : 10
10 because same : 10
13 12 11
output 13 : 13