increment and decrement Operator in c

Increment and Decrement Operators

The increment operator will increment the operand by one value similarly decrements operator decrement the operand by 1 value. This operator will modify the operand so we need to pass only variables constants are not allowed

• --     
• ++
• These two-operator are unary operator

These operators are divided into two category

1. Prefix Increment/decrement-operator is written before the operand.(++num, --num)
2. Postfix Increment/decrement - operator is written after the operand(num++,num--)

Pre increment/ decrement operator:

in pre-increment first increment then assign it.

Example

#include<stdio.h>
int main()
{
int i=10;
printf("i=%d\n",i);
++i;
//--i;
//++10; error
printf("i=%d\n",i);
}

Post increment and decrement:

Post increment rule is first assigned and then increment or decrement of the operand.

Example: 

#include<stdio.h>
void main()
{
//int i=10;
volatile int i=10;
printf("i=%d\n",i);
printf("%d %d %d\n",i++,i++,i++,i++);
}

Output:

using volatile: 14,13,12,11
not using voltaile: 14,14,14,14
in case of pre increment no increment case the latest value will assign gets update

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Further Reading:

 For further information and examples, Please visit[ C-Programming From Scratch to Advanced 2023-2024]

 

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