What is the difference between ++var and var++?

Asked by Last Modified  

20 Answers

Learn C Language

Follow 0
Answer

Please enter your answer

Hitesh Sir

Professional Trainer

First one is present increment and second one is the post incremental t of the variable. Both increases value of var to one. The difference between pre and post increment is given in below example. Int a=10. Int b=++a Then a and b both have the value 11. If b=a++ Then a become 11 and b have 10...
read more
First one is present increment and second one is the post incremental t of the variable. Both increases value of var to one. The difference between pre and post increment is given in below example. Int a=10. Int b=++a Then a and b both have the value 11. If b=a++ Then a become 11 and b have 10 old value of a. read less
Comments
Dislike Bookmark

Programming Languages & Electronics Tutor.

in ++var operation var will increment by 1 first and den comes into action where var++ will do action with current value of var and den it increment by 1
Comments
Dislike Bookmark

Professional Trainer:: Hadoop Big Data, DevOps, Perl, Python

++var -- is for pre-increment, var++ -- is for post increment you will only see the effect when you are assigning this kind of operation to another variable, say int var=10; int i=0; i=++var; // here value of var(10 is incremented and then assigned to variable i, so i and var will be 10 now) var=10; i=var++;...
read more
++var -- is for pre-increment, var++ -- is for post increment you will only see the effect when you are assigning this kind of operation to another variable, say int var=10; int i=0; i=++var; // here value of var(10 is incremented and then assigned to variable i, so i and var will be 10 now) var=10; i=var++; // here value of var is first assigned to i and then var is incremented so in this case, i=10, var=11; remember to avoid these kind of increment or decrement operators which doing math problems, as debugging will be difficult read less
Comments
Dislike Bookmark

Tutor

The difference is as in the notation, one first one is pre and second one is post increment. Pre increment , first increment the value to var+1 and do the rest. In post increment , at first execute the rest and then increment to var+1. var= var+1 is the final result.
Comments
Dislike Bookmark

Developer with rich experience and expertise

++var is the pre-increment operator, that means firstly the value of variable is incremented and then assign new value to the variable. For eg var=9 and ++var means now the value is 10. var++ is post-increment operator,that means firstly the value is assign and then value is incremented. For eg: var=9...
read more
++var is the pre-increment operator, that means firstly the value of variable is incremented and then assign new value to the variable. For eg var=9 and ++var means now the value is 10. var++ is post-increment operator,that means firstly the value is assign and then value is incremented. For eg: var=9 and var++ i.e the value of var is 9 read less
Comments
Dislike Bookmark

Experienced software professional, interested in teaching

first one is pre incrementing, second one is post incrementing. Lets take an example; int a,b=10, c; a=++b; c=b++; The values you get will be a=11; b=12, c=11; In case of pre-incrementation, increment happens first, then assignment. In case of post increment, assignment happens first and then...
read more
first one is pre incrementing, second one is post incrementing. Lets take an example; int a,b=10, c; a=++b; c=b++; The values you get will be a=11; b=12, c=11; In case of pre-incrementation, increment happens first, then assignment. In case of post increment, assignment happens first and then increment; That is why b is incremented twice but a and c got values based on when the increment is performed. read less
Comments
Dislike Bookmark

I am a teacher.

See below example; int var==10; int c,d; c=var++; # value of 'c' here is 10, var is incremented to 1 i.e. 11; var=10; #resetting 'var' value to 10 for your better understanding. d=++var; # value of 'd' here is 11. Even var value also 11. in case of ++var, value of 'var' will be first incremented...
read more
See below example; int var==10; int c,d; c=var++; # value of 'c' here is 10, var is incremented to 1 i.e. 11; var=10; #resetting 'var' value to 10 for your better understanding. d=++var; # value of 'd' here is 11. Even var value also 11. in case of ++var, value of 'var' will be first incremented and then assigned to the lvalue (in above e.g. 'd') in case of var++, first 'var' value will be assigned to the lvalue and then 'var' will be incremented (in above e.g. its 'c'). Kindly let me know if you need still more clarification. read less
Comments
Dislike Bookmark

Programming Trainer

These are call pre and post increments respectively. Pre increment allows the program to utilize the updated variable but the post increment does not activates the updated value of the variable until the current context terminates.
Comments
Dislike Bookmark

Technology expert

++var is pre increment.var++ is post increment.Alone if we see pre/post increment there is no difference.variable will get incremented by 1. We can see the difference between pre/post increment only if we use with assignment operator.++var meaning is first increment then assign.var++ meaning is first...
read more
++var is pre increment.var++ is post increment.Alone if we see pre/post increment there is no difference.variable will get incremented by 1. We can see the difference between pre/post increment only if we use with assignment operator.++var meaning is first increment then assign.var++ meaning is first assign then increment. read less
Comments
Dislike Bookmark

Computer Teacher

++Var is pre increment where as var++ is post increment.
Comments
Dislike Bookmark

View 18 more Answers

Related Questions

Can a functions return more than one value at a time?
Actually functions does n't return more than one value. But you can achieve it by returning data structure (i.e.structure,array)
Lamaan
0 0
7

Is C language is used for hack or not?
Yes its is used for hacking purpose.
Jangam
What is meaning of & in c language?
In the C family of languages, &x means “the address of x” and *y means “the value at the address y”.
Khushwunder
0 0
5
What is the actual size of INT in the C language, 2 or 4 bytes?
The actual size to int is determined by the compiler as the program runs. But theoretically the size is 2 bytes. You can increase the size by adding keyword long infront of it to make the size 4 bytes. Eg int a; // 2 bytes Long int b; // 4 bytes
Kunal
Which should I learn first, C or UNIX?
C is invented with a purpose of building UNIX operating system. So, you should go with C first and then you can start to work on UNIX/LINUX
Tushar
0 0
6

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Structures in C
A structure is a collection of one or more data members possibly of different data types, grouped together under a single name for convenient handling. Defining a Structure: In general terms,...

Venkateswararao S.

0 0
0
Pointers Concept
Every variable has a memory location and every memory location has its address defined which can be accessed using ampersand (&) operator, which denotes an address in memory. Consider the following...

Sudarshan Gupta

0 0
0
C Program-String Palindrome
//Header files #include<stdio.h>#include<conio.h>#include<string.h> //Main function void main(){ char mystring; int i,length; int flag=0; //Function for clearing screen clrscr();...

Salim ahmed Ansari

0 0
0
C and C++ programming with memory level debugging
Understanding C and C++ programming by using memory level debugging. Step 1: Understand the Memory map of C executable Step 2: Start memory level debugging using popular IDE Step 3: Find the memory...

Umasankar Natarajan

0 0
0
Memory Layout of C Programs
A typical memory representation of C program consists of following sections. Text Segment: A text segment, also known as a code segment or simply as text, is one of the sections of a program in an object...

Vijay Kumar

1 0
0

Recommended Articles

Lasya Infotech: An educational Training...

Lasya Infotech is a Hyderabad based IT training institute founded in 2016 by O Venkat. Believing in his innovation, passion and persistence and with a diverse blend of experience, he started his brainchild to deliver exemplary professional courses to aspiring candidates by honing their skills. Ever since the institute envisions...

Read full article >

Brilliant Academy, a reputed B. Tech Tuition...

Brilliant Academy is one of the reputed institutes for B.Tech tuition classes. This institute is specialised in delivering quality tuition classes for B.E, Engineering - all streams and Engineering diploma courses. Incorporated in 2012, Brillant Academy is a brainchild of Mr Jagadeesh. The main motto of the academy is to...

Read full article >

Top 5 Skills Every Software Developer Must have

Software Development has been one of the most popular career trends since years. The reason behind this is the fact that software are being used almost everywhere today.  In all of our lives, from the morning’s alarm clock to the coffee maker, car, mobile phone, computer, ATM and in almost everything we use in our daily...

Read full article >

8 Hottest IT Careers of 2014!

Whether it was the Internet Era of 90s or the Big Data Era of today, Information Technology (IT) has given birth to several lucrative career options for many. Though there will not be a “significant" increase in demand for IT professionals in 2014 as compared to 2013, a “steady” demand for IT professionals is rest assured...

Read full article >

Find C Language Classes near you
C Language Classes in Bangalore
C Language Classes in Hyderabad
C Language Classes in Delhi
C Language Classes in Pune
C Language Classes in Chennai
C Language Classes in Mumbai
C Language Classes in Kolkata
C Language Classes in Noida
C Language Classes in Gurgaon
C Language Classes in Ghaziabad

Looking for C Language Classes?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you