C Programming Tutorial - Increment Operator

increment
#include <stdio.h>

int main()
{
    int apple = 20;
    printf("%d\n", apple);
    apple++; 
    printf("%d\n", apple);

    return 0;
}

decrement

#include <stdio.h>


int main()
{
    int apple = 20;
    printf("%d\n", apple);
    apple--; 
    printf("%d\n", apple);

    return 0;
}

increment

#include <stdio.h>

int main()
{
    int apple = 20;
    printf("%d\n", apple);
    ++apple; 
    printf("%d\n", apple);

    return 0;
}

How before and after differs

#include <stdio.h>

int main()
{
    int a = 5, b = 10, answer = 0; 
    answer = ++a *b ; 
it changes the value of a before it changes the equation.
   
    printf(" Answer: %d \n", answer);
    
here reset and get rid of int variable.
 a = 5, b = 10, answer = 0; 
    answer = a++ *b ; 
    
++after a it runs the current value and then do the increment.

    printf(" Answer: %d \n", answer);
    
    return 0;
}

See my youtube channel for more explanation on this :).