windows c语言获取所有网卡ip

在Windows系统下，可以使用GetAdaptersAddresses函数来获取所有网卡的IP地址。这个函数会返回一个链表，包含了所有网络接口的地址信息。下面是一个获取所有网卡IP地址的示例代码：

#include <stdio.h>
#include <stdlib.h>
#include <winsock2.h>
#include <iphlpapi.h>

#pragma comment(lib, "IPHLPAPI.lib")
#pragma comment(lib, "Ws2_32.lib")

int main() {
    PIP_ADAPTER_ADDRESSES pAddresses = NULL;
    ULONG ulSize = 0;

    // Make an initial call to GetAdaptersAddresses to get the necessary size into the ulSize variable
    if (GetAdaptersAddresses(AF_UNSPEC, 0, NULL, pAddresses, &ulSize) == ERROR_BUFFER_OVERFLOW) {
        // Allocate memory for the adapter addresses
        pAddresses = (PIP_ADAPTER_ADDRESSES) malloc(ulSize);
        if (pAddresses == NULL) {
            printf("Error allocating memory needed to call GetAdaptersAddresses\n");
            return 1;
        }

        // Get the adapter addresses
        if (GetAdaptersAddresses(AF_UNSPEC, 0, NULL, pAddresses, &ulSize) == NO_ERROR) {
            PIP_ADAPTER_ADDRESSES pCurrAddresses = pAddresses;
            while (pCurrAddresses) {
                printf("%S:\n", pCurrAddresses->FriendlyName);

                // Walk through the list of IP addresses for this adapter
                PIP_ADAPTER_UNICAST_ADDRESS pUnicast = pCurrAddresses->FirstUnicastAddress;
                while (pUnicast) {
                    struct sockaddr_in *pAddr = (struct sockaddr_in *) pUnicast->Address.lpSockaddr;
                    printf("\t%s\n", inet_ntoa(pAddr->sin_addr));
                    pUnicast = pUnicast->Next;
                }

                pCurrAddresses = pCurrAddresses->Next;
            }
        } else {
            printf("Error calling GetAdaptersAddresses\n");
            return 1;
        }

        free(pAddresses);
    } else {
        printf("Error calling GetAdaptersAddresses\n");
        return 1;
    }

    return 0;
}

这个代码会遍历所有网卡，打印出每个网卡的名称和对应的IP地址。注意，这个代码需要在Windows系统下编译运行，并且需要链接IPHLPAPI.lib和Ws2_32.lib两个库文件。