Pre Decrement and post Decrement
When to use a pre-decrement and when to use a post-decrement?
and for the next piece of code whether to use pre or post decment.
static private void function(int number)
{
charArr = new char[number];
int i = 0;
int tempCounter;
int j = 0;
while(charrArr!=someCharArr)
{
tempCounter = number - 1;
password[tempCounter] = element[i%element.Length];
i++;
//This is the loop the I want to use the decrementing in.
//Suppose I have a char array of size 5, the last element of index 5 is updated
//in the previous statement.
//About the upcoming indexes 4, 3, 2, 1 and ZERO.
//How should I implement it?
// --tempCounter or tempCounter-- ?
while (charArr[--tempCounter] == element[element.Length - 1])
{
}
}
}
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2 answers
You use a pre-decrement when you want to decrease the value of a variable before the value is passed to the rest of the expression. On the other hand, post-decrement evaluates the expression before the variable is decremented:
int i = 100, x;
x = --i; // both are 99
and
int i = 100, x;
x = i--; // x = 100, i = 99
The same is true for increments.
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