mykernel是cuda的核函数foo是mykernel的一个函数参数 foo的功能是将int src的赋值给int dst 请给出示例代码

下面是一个示例代码，其中mykernel的函数签名为__global__ void mykernel(int *dst, int *src)，foo是mykernel的一个参数，其类型为int：

#include <cuda_runtime.h>
#include <cstdio>

__global__ void mykernel(int *dst, int *src) {
    int i = blockIdx.x * blockDim.x + threadIdx.x;
    dst[i] = src[i];
}

int main() {
    int n = 10;
    int *host_src = new int[n];
    int *host_dst = new int[n];
    int *device_src, *device_dst;

    // Allocate memory on device
    cudaMalloc(&device_src, n * sizeof(int));
    cudaMalloc(&device_dst, n * sizeof(int));

    // Initialize host data
    for (int i = 0; i < n; i++) {
        host_src[i] = i;
        host_dst[i] = 0;
    }

    // Copy host data to device
    cudaMemcpy(device_src, host_src, n * sizeof(int), cudaMemcpyHostToDevice);

    // Launch kernel
    int blocksize = 256;
    int gridsize = (n + blocksize - 1) / blocksize;
    mykernel<<<gridsize, blocksize>>>(device_dst, device_src);

    // Copy device data to host
    cudaMemcpy(host_dst, device_dst, n * sizeof(int), cudaMemcpyDeviceToHost);

    // Verify result
    for (int i = 0; i < n; i++) {
        if (host_dst[i] != host_src[i]) {
            printf("Error: host_dst[%d] = %d, host_src[%d] = %d\n", i, host_dst[i], i, host_src[i]);
            break;
        }
    }

    // Free memory
    cudaFree(device_src);
    cudaFree(device_dst);
    delete[] host_src;
    delete[] host_dst;

    return 0;
}
``