多项选择测验 [英] Multiple choice quiz

问题描述

对于C语言编写的代码，谁能告诉我哪个是最正确或最合适的答案?

代码1:

Can anyone tell me which one is correct or most appropriate answer for code written in C language?

Code1:

#include<stdio.h>

int main()
{
    int i=10, j=20;
    const int *ptr = &i;

    printf("i = %5X", ptr);
    printf("ptr = %d", *ptr);
    ptr = &j;
    printf("j = %5X", ptr);
    printf("ptr = %d", *ptr);
    return 0;
}

选择:
A. i = FFE2 ptr = 12 j = FFE4 ptr = 24
B. i = FFE4 ptr = 10 j = FFE2 ptr = 20

C. i = FFE0 ptr = 20 j = FFE1 ptr = 30
D.垃圾价值

代码2:

Choice:
A. i= FFE2 ptr=12 j=FFE4 ptr=24
B. i= FFE4 ptr=10 j=FFE2 ptr=20

C. i= FFE0 ptr=20 j=FFE1 ptr=30
D. Garbage value

Code2:

#include<stdio.h>

int fun(int **ptr);

int main()
{
    int i=10;
    const int *ptr = &i;

    fun(&ptr);
    return 0;
}

int fun(int **ptr)
{
    int j = 223;
    int *temp = &j;

    printf("Before changing ptr = %5x\n", *ptr);
    const *ptr = temp;
    printf("After changing ptr = %5x\n", *ptr);
    return 0;
}

以上程序的答案

因为我对C

The answer of above program

Because i dont know much about pointers in C

推荐答案

中的指针了解不多，为什么不(尝试)编译它?
:)

Why don''t you (try to) compile it?
:)

YOGESH DHAGE写道:

YOGESH DHAGE wrote:

有人可以告诉我哪一个是正确的还是最合适的

Can anybody tell me wich one is correct or most apropriate

blockquote>

正确或最适合什么?您尚未说明代码应执行的操作.

Correct or most appropriate for what? You have not explained what your code is supposed to do.

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