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前言

C语言指针和数组的一些笔试题

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一、一维数组

#include <stdio.h>
int main()
{int a[] = { 1,2,3,4 };printf("%d\n", sizeof(a));printf("%d\n", sizeof(a + 0));printf("%d\n", sizeof(*a)); printf("%d\n", sizeof(a + 1));printf("%d\n", sizeof(a[1]));printf("%d\n", sizeof(&a));printf("%d\n", sizeof(*&a));printf("%d\n", sizeof(&a + 1));printf("%d\n", sizeof(&a[0]));printf("%d\n",sizeof(&a[0] + 1));return 0;
}

二、字符数组-1

#include <stdio.h>
int main()
{char arr[] = { 'a', 'b', 'c' , 'd', 'e', 'f' };printf("%d\n", sizeof(arr));printf("%d\n", sizeof(arr + 0));printf("%d\n", sizeof(*arr));printf("%d\n", sizeof(arr[1]));printf("%d\n", sizeof(&arr));printf("%d\n", sizeof(&arr + 1));printf("%d\n", sizeof(&arr[0] + 1));printf("%d\n", strlen(arr));printf("%d\n", strlen(arr + 0));//printf("%d\n", strlen(*arr)); // err//printf("%d\n", strlen(arr[1])); // errprintf("%d\n", strlen(&arr));printf("%d\n", strlen(&arr + 1));printf("%d\n", strlen(&arr[0] + 1));return 0;
}

三、字符数组-2

#include <stdio.h>
int main()
{char arr[] = "abcdef";printf("%d\n", sizeof(arr));printf("%d\n", sizeof(arr + 0));printf("%d\n", sizeof(*arr));printf("%d\n", sizeof(arr[1]));printf("%d\n", sizeof(&arr));printf("%d\n", sizeof(&arr + 1));printf("%d\n", sizeof(&arr[0] + 1));printf("%d\n", strlen(arr));printf("%d\n",strlen(arr + 0));//printf("%d\n", strlen(*arr));//err//printf("%d\n",strlen(arr[1]));//errprintf ("%d\n",strlen(&arr));printf("%d\n",strlen(&arr + 1));printf("%d\n", strlen(&arr[0] + 1));return 0;
}

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总结

C语言指针和数组的一些笔试题