用c++,Define an array of strings called fruits that stores "Banana" "Apple" "Orange" "Mango" "Pineapple"
时间: 2024-09-18 20:15:32 浏览: 19
在C++中,你可以通过定义一个动态数组(std::vector)来存储字符串,因为它的大小可以动态调整,适合存储一组元素。这里是如何创建名为fruits的字符串数组,包含"Banana", "Apple", "Orange", "Mango", 和 "Pineapple":
```cpp
#include <iostream>
#include <string>
#include <vector>
int main() {
std::vector<std::string> fruits = {"Banana", "Apple", "Orange", "Mango", "Pineapple"};
// 打印数组中的元素来验证
for (const auto& fruit : fruits) {
std::cout << fruit << " ";
}
std::cout << "\n";
return 0;
}
```
在这个例子中,`fruits`是一个`std::vector<std::string>`类型的变量,它内部实际上是一个动态数组,能够容纳任意数量的字符串。数组初始化时直接给出了5个元素。
相关问题
用c++,Define and call a function called display that prints out the Original Array of fruits.
在 C++ 中,你可以定义一个函数 `display` 来打印数组的内容。首先,你需要有一个包含水果名称的数组。假设我们有一个字符串数组 `fruits`,下面是一个简单的示例:
```cpp
#include <iostream>
#include <string>
// 定义数组
const std::string fruits[] = {"Apple", "Banana", "Cherry"};
// 函数声明,指明返回类型void,接受一个字符串数组作为参数
void display(const std::string arr[], int size);
int main() {
// 调用 display 函数并传入水果数组和其大小
display(fruits, sizeof(fruits) / sizeof(fruits[0]));
return 0;
}
// 函数定义
void display(const std::string arr[], int size) {
for (int i = 0; i < size; ++i) {
std::cout << arr[i] << " ";
}
std::cout << "\n";
}
a vx_image out of an array
To create a `vx_image` out of an array, you can use the OpenVX API. Here's an example:
```
vx_context context = vxCreateContext();
// Define the image properties
vx_uint32 width = 640;
vx_uint32 height = 480;
vx_df_image format = VX_DF_IMAGE_U8;
// Create the image
vx_image image = vxCreateImage(context, width, height, format);
// Get the image properties
vx_uint32 image_width, image_height;
vx_df_image image_format;
vxQueryImage(image, VX_IMAGE_WIDTH, &image_width, sizeof(image_width));
vxQueryImage(image, VX_IMAGE_HEIGHT, &image_height, sizeof(image_height));
vxQueryImage(image, VX_IMAGE_FORMAT, &image_format, sizeof(image_format));
// Create an array to hold the image data
vx_uint8 *data = (vx_uint8*)malloc(image_width * image_height * sizeof(vx_uint8));
// Fill the array with data (e.g. from a file)
// ...
// Copy the array into the image
vx_imagepatch_addressing_t addr;
addr.dim_x = image_width;
addr.dim_y = image_height;
addr.scale_x = VX_SCALE_UNITY;
addr.scale_y = VX_SCALE_UNITY;
addr.step_x = sizeof(vx_uint8);
addr.step_y = image_width * sizeof(vx_uint8);
vx_imagepatch_rect_t rect;
rect.start_x = 0;
rect.start_y = 0;
rect.end_x = image_width;
rect.end_y = image_height;
vxCopyImagePatch(image, &rect, 0, &addr, data, VX_WRITE_ONLY, VX_MEMORY_TYPE_HOST);
// Use the image for processing
// ...
// Release resources
vxReleaseImage(&image);
vxReleaseContext(&context);
free(data);
```
This code creates an OpenVX context, creates an image with the specified properties, creates an array to hold the image data, fills the array with data, and copies the array into the image. You can then use the image for processing and release the resources when you're done.