[i], '0', cols); } return array; } void free_2d_char_array(char **array, int rows) { for (int i = 0; i < rows; i++) { free(array[i]); } free(array); } int main() { int rows = 3; int cols = 4; char **array = create_2d_char_array(rows, cols); // 使用...
#include<stdio.h>#include<stdlib.h>#include<string.h>char**create_2d_char_array(int rows,int cols){char**array=(char**)malloc(rows*sizeof(char*));for(int i=0;i<rows;i++){array[i]=(char*)malloc(cols*sizeof(char));memset(array[i],'0',cols);}returnarray;}voidfree_2d_char_...
int** return_some_array() { int** my_array = array_create(int*, 10); int value = 0; for(int i = 0; i < array_length(my_array); i++) my_array[i] = array_create(int, 20); return my_array; } int main() { int
}int*ptr_arr_start = &arr2;int*ptr_arr_end = &arr2 +1; sum=sum2DArray(arr2, ptr_arr_start, ptr_arr_end); } 但是上面有错误 intsum2DArray(int*start,int*end) {intsum =0;int*p =start;while(p <end) { sum+= *p; p++; }returnsum; }voidmain(){intarr1[3][4] = {0};i...
#include <stdio.h> int main() { int array[3][4] = { {1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12} }; printf("%d\n", array[1][2]); // 输出: 7 return 0; } 在这个例子中,我们声明了一个3行4列的整型二维数组,并使用嵌套的花括号初始化了它的元素。通过array[1]...
return NULL; x = input->dimensions[0]; y = input->dimensions[1]; z = input->dimensions[2]; for(k=0;k<z;k++){ for(j=0;j<y;j++){ for(i=0;i < x; i++){ out += *(double*)(input->data + i*input->strides[0] ...
return (T**)arr; } //释放二维数组 void free_Aarray2D(void **arr) { if (arr != NULL) free(arr); } int main() { printf(" C语言中动态的申请二维数组 malloc free\n"); printf(" -- by MoreWindows( http://blog.csdn.net/MoreWindows ) --\n\n"); ...
species = np.array([row.tolist()[4] for row in iris]) print(species) u, counts = np.unique(species, return_counts=True) print(u, counts) 1. 2. 3. 4. 5. 6. 7. 25、如何将数字转换为分类(文本)数组? #将iris_2d的花瓣长度(第3列)加入以形成文本数组 ...
return 0; } void printAr(int B[3][3]) { for(int k=0;k<3;k++) { for(int l=0;l<3;l++) { printf("%d ",B[k][l]); } printf("\n"); } } 输出如下: Enter the numbers: 1 2 3 4 5 6 7 8 9 --- 1 2 3 4 5 6 7 8 9 Now transposing-...