创建数组对象 cJSON *array = cJSON_CreateArray(); cJSON_AddItemToObject(root, "text", array); for (i = 0; i < (sizeof(resolution_numbers) / (2 * sizeof(int))); ++i) { cJSON *obj = cJSON_CreateObject(); cJSON_AddItemToArray(array, obj); width = cJSON_CreateNumber(...
章节引言: 在matplotlib和cartopy中,其常见的绘图命令,若是带有颜色映射的collection(s)类,则基本都可以引入cmap与colorbar功能来分析数据。cmap即是颜色映射表,colorbar即是颜色分析色条,前者只起到对绘图对象上色的功能,后者实现色阶与数值的对应。 常见的绘图命令scatter、contour、contourf、pcolormesh等都可以引入cmap...
在这里,第一个元素&data[0]的地址称为基地址,其偏移量就是下标值和每个元素的大小sizeof(int)相乘。假设数组元素&data[0] 的地址为A,且在内存中的实际地址为0x22FF74,那么&data[1]的值为:当data作为sizeof的操作数时,其返回的是整个数组的长度。在这里,sizeof(data)的大小为12,即3个元素占用的字节数为...
使用一个数组执行多行获取,该数组针对每次获取可保存ARRAY_SIZE行。 multirow_fetch():在循环中获取ARRAY_SIZE(此数值在此函数自身中定义)行,直到 fetch 返回OCI_NO_DATA。在该程序中,ARRAY_SIZE定义为 3,意味着该程序一次获取 3 行。在第一次循环中获取首个 3 行,在第二次循环中获取第二个 3 行,继续下...
AscendCL初始化接口aclInit,用于运行时接口AscendCL的初始化,是程序最先调用的接口;aclrtCreateContext和aclrtCreateStream用于创建Context和Stream,主要用于线程相关的资源管理。 aclrtMallocHost接口,用于在Host上申请内存: aclError aclrtMallocHost(void **hostPtr, size_t size) 这个函数和C语言中的malloc类似,用于...
if (newValueRect.Width > oldValueRect.Width) { updateRect.X = oldValueRect.Size.Width; updateRect.Width = newValueRect.Width - oldValueRect.Width; } else { updateRect.X = newValueRect.Size.Width; updateRect.Width = oldValueRect.Width - newValueRect.Width; } updateRect.Height = this...
In the C program above, we create an array of structs to represent student records. The code begins by including the standard input/output library (stdio.h). Next, a structure named Student is defined, containing three members: rollNumber (integer), studentName (character array of size 20)...
v->size = v->capability = reserve_size; v->val_size = val_size; } returnv; } structvector *vector_copy_create(structvector *v) { assert(v); if(!v->buf) returnvector_create(v->val_size,0); structvector *ret = malloc(sizeof(*v)); ...
Number of dimensions in the created cell. For example, to create a three-dimensional cellmxArray, setndimto 3. dims Dimensions array. Each element in the dimensions array contains the size of themxArrayin that dimension. For example, in C, settingdims[0]to5anddims[1]to7establishes a5-by...
This allows us to create an array whose size can be determined at runtime. We then initialize each struct individually. Finally, we free the allocated memory to prevent memory leaks. This method is particularly useful when dealing with larger datasets or when the number of elements isn’t ...