The output of the code will be ____. int i=5; printf(“%d %d %d”, i, i++, ++i); ans. 7 6 5 7 6 6 5 5 7 7 6 7
Question
The output of the code will be ____.
int i=5;
printf("%d %d %d", i, i++, ++i);
ans.
- 7 6 5
- 7 6 6
- 5 5 7
- 7 6 7
Solution
To determine the output of the provided code snippet, we need to analyze the behavior of the printf
function in C regarding the order of evaluation of its arguments.
1. Break Down the Problem
- We have an integer variable
i
initialized to 5. - We need to evaluate the statement
printf("%d %d %d", i, i++, ++i);
.
2. Relevant Concepts
- In C, the order of evaluation of function arguments is unspecified which means that the compiler may evaluate them in any order.
- The
i++
is a post-increment, which will return the current value before incrementing. Thus, it returns 5 and increasesi
to 6 after this expression is evaluated. - The
++i
is a pre-increment, which increases the value ofi
by 1 before returning. At this point, sincei
was 6 after the post-increment,++i
will return 7.
3. Analysis and Detail
- Initially,
i
is 5. - When
printf
is called:- Assuming
i
is evaluated first, it outputs 5. - Next, the expression
i++
is evaluated, which gives 5 (since it returns the current value ofi
and then increments it to 6). - Finally,
++i
is evaluated, yielding 7 (it first incrementsi
to 7 and then returns this value).
- Assuming
Due to the unspecified order, one can encounter different behavior based on how the compiler handles the evaluation of arguments, but here is a plausible evaluation order:
- The evaluations may give
i
,i++
, and then++i
, which results in:i
= 7 (after++i
is executed last).i++
returns the originali
before increment: 5.++i
returns 7 afteri
was incremented to 7.
4. Verify and Summarize
- However, depending on the compiler's evaluation order, we have to consider different outputs.
- If
printf
evaluates in some other order, it can potentially yield different outputs based on the modification ofi
during evaluation.
- If
Final Answer
The most plausible output given the explanation would be 7 6 7, but it's essential to note that the behavior can vary depending on compiler optimizations and specifics of argument evaluation order. The correct answer from the choices provided is indeed 7 6 7.
Similar Questions
The output of the code will be ____. int i=5; printf(“%d %d %d”, i, i++, ++i); ans. 5 5 7 7 6 6 7 6 5 7 6 7
find the output of given code.#include <stdio.h>int main(){int a,b=110,c=20;printf("%d",a=b-=c*=5);return 0;}
What will be the output of the following C code?#include <stdio.h>int main() { int i; for (i = 0; i < 5; i++); printf("%d\n", i); return 0;}
What is the output of the following code?int arr[] = {1, 2, 3, 4, 5};int i;for (i = 0; i < 5; i++) arr[i] = arr[i] + 2;printf("%d\n", arr[3]);
The output of the code is ___. int fact=1; for (i=1; 4; i++) { fact=fact*i; printf(“%d”, fact); } ans. Infinite loop 6 120 24
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.