int arr1[5]={1,2,3,4,5};int arr2[5];for(int i=0;i<5;i++){arr2[i]=arr1[i];} 使用std::array时,可以使用赋值运算符来复制: 代码语言:javascript 代码运行次数:0 复制 Cloud Studio代码运行 std::array<int,5>arr1={1,2,3,4,5};std::array<int,5>arr2;arr2=arr1; 方法二 使...
}memset(p_dest_array,0xF, SIZE_BYTES *sizeof(char));// time only the memcpy FROM p_big_array TO p_dest_arrayTimer timer;memcpy(p_dest_array, p_big_array, SIZE_BYTES *sizeof(char));doubleelapsed_ms = timer.elapsedMs(); std::cout <<"memcpy for "<< formatBytes(SIZE_BYTES) <<...
int destinationArray[rows][cols]; std::memcpy(destinationArray, sourceArray, sizeof(sourceArray)); // 打印目标数组 for (int i = 0; i < rows; i++) { for (int j = 0; j < cols; j++) { std::cout << destinationArray[i][j] << " "; } std::cout << std::endl; } return...
{1,2,3,4,5,6,7,8,9}; // int 数组 print_array(arr, 9); // std::memmove(arr + 4, arr + 3, sizeof(int)); // 从 [4, 5, 6] 复制到 [5, 6, 7] std::memmove(arr + 4, arr + 3, 4); // 从 [4, 5, 6] 复制到 [5, 6, 7] print_array(arr, 9); } // ...
7]std::memmove(arr+4,arr+3,4);// 从 [4, 5, 6] 复制到 [5, 6, 7]print_array(arr,9...
Pointer to the destination array where the content is to be copied. source C string to be copied. Return Value destinationis returned. Example 1#include <iostream>2#include <cstring>3using namespace std;4intmain ()5{6charstr1[]="Sample string";7charstr2[40];8charstr3[40];9strcpy (...
{1, 2, 3, 4, 5}; int destinationArray[size]; // 使用memcpy复制数组内容 std::memcpy(destinationArray, sourceArray, size * sizeof(int)); // 打印目标数组以验证复制是否成功 for (int i = 0; i < size; i++) { std::cout << destinationArray[i] << " "; } ...
using namespace std; void *memory(void *dst,const void *src,size_t s) //注意memcpy函数返回值是void *类型 { const char* psrc=static_cast<const char*>(src); //注意类型转换 char* pdst=static_cast<char*>(dst); //注意类型转换
Pointer to the destination array where the content is to be copied. source C string to be copied. Return Value destinationis returned. Example 1#include <iostream>2#include <cstring>3using namespace std;4intmain ()5{6charstr1[]="Sample string";7charstr2[40];8charstr3[40];9strcpy (...
在C++中,`memcpy`函数用于在内存之间进行字节级别的复制。然而,由于C++提供了更高级别的抽象和功能,有一些替代方案可以用来代替`memcpy`函数。 1. `std::copy`:`std...