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main()
{
int x=20,y=35;
x = y++ + x++;
y = ++y + ++x;
printf("%d %d\n",x,y);
}
- 27 Answers
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Answer / jaya prakash
57 94
{x=y++ + x++;}
equal to
{
x=y+x;//35+20
x++; //56
y++; //36
}
y=++y + ++x;
equal to
{
++y;//37
++x;//57
y=y+x;//37+57
}
So x=57
y=94
| Is This Answer Correct ? | 223 Yes | 59 No |
Answer / bala
56 93.
I will rewrite the above program for ur understand.
int x=20,y=35;
int x1,y1;
x1=y++ + x++; //this line y=35 and x=20 before assign the
value to x.
x=x1; // Value of x1=55, y=36 and x=21.
y1=++y + ++x;//this line y=37 and x=56 before assign the
value to y.
y=y1;// Value of x=56, y=37 and y1=93.
Finally x=56 and y=93
| Is This Answer Correct ? | 56 Yes | 10 No |
Answer / manju
while calculating the x value,x & y values are post
incremented.So the values of x & y are added and then
incremented i.e. x=56,y=36
while calculating the y value,x & y values are
preincremtned,so x & y values are incremented and then
added i.e. x=57,y=37.
so x=57
y=57+37=94.
| Is This Answer Correct ? | 58 Yes | 18 No |
Answer / joseph
Here this should make it easier for you...
Problem_________|___Solution__|
int x=20, y=35; (here the values of x,y are apparent.)
x = y++ + x++; (x=y+x+1) or(x = 35 + 20 + 1)x = 56
But; you incremented y, its now = 36
y = ++y + ++x; (y =(y+1)+(x+1)) or(y=1+36+1+56)y = 94
This is the second time you incremented
x so it is now = 57.
The reason that you are getting different increases
for x and y is that when you use statement(x=x++) you are
first stating that x is = to x, and then 'increment x.
when you use statemnt(x=++x) you are first
stating 'increment x, then that x is = to x.
look at the code and description in the chart below.
table:
code = meaning;
int x=2
int y=2
-------------------|
(x=x++) = "x = x, x + 1" (increment happens after)
(x=++x) = "x = (x+1)" (increment happens before)
(x=y++) = "x = y, y + 1" (increment happens after)
(x=++y) = "x = (y+1)" (increment happens before)
if you want to add y to x and then increment y use this
statement:
x+=y++
if you want to increment y and then add it to x use this
statement:
x+=++y
| Is This Answer Correct ? | 25 Yes | 7 No |
Answer / ledia
The program results in an undefined behaviour. You're wrong
if you have a certain answer. Learn more on the wikipedia
http://en.wikipedia.org/wiki/Sequence_point
| Is This Answer Correct ? | 5 Yes | 4 No |
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