Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Precedence of postfix ++ and prefix ++ in C/C++
Here we will see the precedence of postfix++ and prefix++ in C or C++. The precedence of prefix ++ or -- has higher priority than dereference operator ‘*’ and postfix ++ or -- has priority higher than both prefix ++ and dereference operator ‘*’.
When ptr is a pointer, then *ptr++ indicates *(ptr++) and ++*prt refers ++(*ptr)
Example
#include<iostream>
using namespace std;
int main() {
char arr[] = "Hello World";
char *ptr = arr;
++*ptr;
cout << *ptr;
return 0;
}Output
I
So here at first ptr is pointing ‘H’. after using ++*ptr it increases H by 1, and now the value is ‘I’.
Example
#include<iostream>
using namespace std;
int main() {
char arr[] = "Hello World";
char *ptr = arr;
*ptr++;
cout << *ptr;
return 0;
}Output
e
So here at first ptr is pointing ‘H’. after using *ptr++ it increases the pointer, so ptr will point to the next element. so the result is ‘e’.
Updated on: 30-Jul-2019
1K+ Views
Advertisements