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1. a=5,what is the output of a++ and ++a?
2. i=3;
     j=2*(i++);
     k=2*(++i);
      what is the output of j and k?

By : nandigam anjali On : 28-Dec-2012 Answers : 5 Report Abuse

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Previous Answers

1.for a++ gives a=5; and ++a gives a=6;
2.

On : 22-Jan-2013 Accept Count : 0

By : Hemant Kumar Singh

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stepwise answer is here:

(1)here       a=5,                       (1)      a=5,
(2)and        a++=5,                   (2)++a=6
(3)and now a=6                        (3)      a=6

so answer is:

a++=5 and ++a=6
a++ is post operator, i.e. it's effect will be after one line and ++a is pre operator, i.e. it increases it's value first than performs other operations......

here is a great example for you ::::

    #include<iostream.h>
    #include<conio.h>
    void main()
    {
    clrscr();
    int a,b;
    a=1;
    cout<<a<<endl;
    cout<<a++<<endl;
    cout<<a<<endl<<endl;
    b=5;
    cout<<b<<endl;
    cout<<++b<<endl;
    cout<<b<<endl;
    getch();
    }

o/p:::::
1
1
2
5
6
6

On : 22-Jan-2013 Accept Count : 0

By : sandeep kuraria

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1.a++=6,++a=6
2.j=8,k=8

On : 19-Jan-2013 Accept Count : 0

By : CHITRA

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1)a++=5, ++a=6
2)j=6,k=12

On : 10-Jan-2013 Accept Count : 0

By : yadav komal

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j=6 k=10