中文含义:sizeof使用数组作为参数时会返回int*大小(指针的字节数),即使用sizeof测试数组类型的参数大小时得到的并不是整个数组的字节数,而是指针的字节数(数组被退化为指针使用sizeof) 原因是数组作为参数传给函数时,是传给数组首个元素的地址,而不是传给整个的数组空间,因此 sizeof(arr)这句话会报错...
* Return an array of arrays of size *returnSize. * The sizes of the arrays are returned as *returnColumnSizes array. * Note: Both returned array and *columnSizes array must be malloced, assume caller calls free(). */ int** threeSum(int* nums, int numsSize, int* returnSize, int** ...
在C语言中,数组作为函数参数时将退化为指针。 #include<stdio.h>//Sizeof on array function parameter will return size of 'int *' instead of 'int []'intsizeofArray(intarray[]){returnsizeof(array);}intmain(intargc,constchar*argv[]){// insert code here...intdata1[]={1,2,3,4,5};si...
warning: 'sizeof' on array function parameter 'arr' will return size of 'int*' 同样的代码在visual code 运行正常 捕获1.PNG 捕获2.PNG 但是在终端里运行就报错 捕获3.PNG 捕获4.PNG 小白初学C++ 还请各路神仙指教一二
由于这是一个严重错误,所以必须强制终止程序,这时就可以用return语句来提前结束运行。如 int *p=(int *)malloc(sizeof(int)*int)if(p==NULL)return;不过要注意,return函数值是结束当前函数的调用,只有在主函数中return语句才具有结束程序的能力,在调用的函数中,只是结束你调用的函数罢了。
int func(int aa[4]) { return sizeof(aa);} 返回值为几何?? 偶遇此问题,顺便在标准中找到了相关描述。 C99 A declaration of a parameter as‘‘array of type’’ shall be adjusted to ‘‘qualified pointer to type’’, where the typequalifiers (if any) are those specified within the [ and...
int main(void) { printf ("size = %d\n", sizeof(main)); } What is the returned value sizeof applied to a function name, for example main? c function sizeof Share Improve this question Follow edited Apr 21, 2020 at 14:22 Roberto Caboni 7,4721010 gold badges2727 silver badges414...
perhaps you should change your prototypevoidtoBase(intnum,intto,intresult[],int*size); the size of the array is on `i' Dec 23, 2019 at 6:44pm Shervan360(183) @ne555 Thank you but we don't know what is the size of arr in toBase function. The size of the arr is not fixed. ...
例如: ``` int* create_array(int size) { int* arr = (int*)malloc(sizeof(int) * size); for (int i = 0; i < size; i++) { arr[i] = i; } return arr; } ``` 总之,return 语句在 C 语言中具有重要作用,它可以让函数返回一个值,并结束函数的执行。
函数中使用的预定义符号如下: typedef struct TreeNode/*二叉排序树节点*/ char *word; struct TreeNode *left, *right; BNODE; int getWord(FILE *fpt, char *word) /*从文件fpt中读取单词到word中,到达文件结束时返回0*/ char c; c = fgetc(fpt); if(c == EOF)r...