pre-decrement and post-increment issue [duplicate]
This question already has an answer here:
Undefined behavior and sequence points
5 answers
Unexpected order of evaluation (compiler bug?) [duplicate]
3 answers
Hi I am currently studying for my first exam in C++ programming and I am having this issue:
int x = 12;
int y = 2;
cout << x++ <<" "<< --x; //Output: 11 12
I expected the output to be: 11 11, because 'cout' goes from right to left so the pre-decrement on x (--x) should decrement the value of x, and x++ wouldn't print out 12 because it is post-decrement. Is this an example of undefined behaviour?
cout << x++ << " " << --y; //Output: 12 1
While this line outputs the expected value of x.
Thanks in advance.
c++ increment post-increment decrement pre-increment
asked Nov 15 '18 at 15:24
Mirsad HasicMirsad Hasic
1
marked as duplicate by CoryKramer c++
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Nov 15 '18 at 15:25
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
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This question already has an answer here:
Undefined behavior and sequence points
5 answers
Unexpected order of evaluation (compiler bug?) [duplicate]
3 answers
Hi I am currently studying for my first exam in C++ programming and I am having this issue:
int x = 12;
int y = 2;
cout << x++ <<" "<< --x; //Output: 11 12
I expected the output to be: 11 11, because 'cout' goes from right to left so the pre-decrement on x (--x) should decrement the value of x, and x++ wouldn't print out 12 because it is post-decrement. Is this an example of undefined behaviour?
cout << x++ << " " << --y; //Output: 12 1
While this line outputs the expected value of x.
Thanks in advance.
c++ increment post-increment decrement pre-increment
asked Nov 15 '18 at 15:24
Mirsad HasicMirsad Hasic
1
marked as duplicate by CoryKramer c++
Users with the c++ badge can single-handedly close c++ questions as duplicates and reopen them as needed.
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Nov 15 '18 at 15:25
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
1
"because 'cout' goes from right to left" nope, because you don't have any sequence points between those operations
– CoryKramer
Nov 15 '18 at 15:25
add a comment |
This question already has an answer here:
Undefined behavior and sequence points
5 answers
Unexpected order of evaluation (compiler bug?) [duplicate]
3 answers
Hi I am currently studying for my first exam in C++ programming and I am having this issue:
int x = 12;
int y = 2;
cout << x++ <<" "<< --x; //Output: 11 12
I expected the output to be: 11 11, because 'cout' goes from right to left so the pre-decrement on x (--x) should decrement the value of x, and x++ wouldn't print out 12 because it is post-decrement. Is this an example of undefined behaviour?
cout << x++ << " " << --y; //Output: 12 1
While this line outputs the expected value of x.
Thanks in advance.
c++ increment post-increment decrement pre-increment
asked Nov 15 '18 at 15:24
Mirsad HasicMirsad Hasic
1
This question already has an answer here:
Undefined behavior and sequence points
5 answers
Unexpected order of evaluation (compiler bug?) [duplicate]
3 answers
Hi I am currently studying for my first exam in C++ programming and I am having this issue:
int x = 12;
int y = 2;
cout << x++ <<" "<< --x; //Output: 11 12
I expected the output to be: 11 11, because 'cout' goes from right to left so the pre-decrement on x (--x) should decrement the value of x, and x++ wouldn't print out 12 because it is post-decrement. Is this an example of undefined behaviour?
cout << x++ << " " << --y; //Output: 12 1
While this line outputs the expected value of x.
Thanks in advance.
This question already has an answer here:
Undefined behavior and sequence points
5 answers
Unexpected order of evaluation (compiler bug?) [duplicate]
3 answers
c++ increment post-increment decrement pre-increment
c++ increment post-increment decrement pre-increment
asked Nov 15 '18 at 15:24
Mirsad HasicMirsad Hasic
1
asked Nov 15 '18 at 15:24
Mirsad HasicMirsad Hasic
1
asked Nov 15 '18 at 15:24
Mirsad HasicMirsad Hasic
1
asked Nov 15 '18 at 15:24
Mirsad HasicMirsad Hasic
1
asked Nov 15 '18 at 15:24
Mirsad HasicMirsad Hasic
1
1
marked as duplicate by CoryKramer c++
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Nov 15 '18 at 15:25
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
marked as duplicate by CoryKramer c++
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Nov 15 '18 at 15:25
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
1
"because 'cout' goes from right to left" nope, because you don't have any sequence points between those operations
– CoryKramer
Nov 15 '18 at 15:25
add a comment |
1
"because 'cout' goes from right to left" nope, because you don't have any sequence points between those operations
– CoryKramer
Nov 15 '18 at 15:25
1
1
"because 'cout' goes from right to left" nope, because you don't have any sequence points between those operations
– CoryKramer
Nov 15 '18 at 15:25
"because 'cout' goes from right to left" nope, because you don't have any sequence points between those operations
– CoryKramer
Nov 15 '18 at 15:25
add a comment |
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"because 'cout' goes from right to left" nope, because you don't have any sequence points between those operations
– CoryKramer
Nov 15 '18 at 15:25