C语言写一个函数能够输入IP地址，端口，发包大小，发送时长以进行通信

你可以使用以下 C 语言代码来实现输入 IP 地址、端口、发包大小、发送时长以进行通信的功能：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <time.h>

void send_packets(char *ip_addr, int port, int packet_size, int send_duration) {
    // 创建 socket
    int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
    if (sockfd < 0) {
        printf("Error creating socket\n");
        return;
    }

    // 设置目标地址
    struct sockaddr_in dest_addr;
    memset(&dest_addr, 0, sizeof(dest_addr));
    dest_addr.sin_family = AF_INET;
    dest_addr.sin_port = htons(port);
    if (inet_pton(AF_INET, ip_addr, &dest_addr.sin_addr) <= 0) {
        printf("Invalid IP address\n");
        close(sockfd);
        return;
    }

    // 生成随机数据包
    char packet[packet_size];
    for (int i = 0; i < packet_size; i++) {
        packet[i] = rand() % 256;
    }

    // 发送数据包
    time_t start_time = time(NULL);
    while (time(NULL) < start_time + send_duration) {
        if (sendto(sockfd, packet, packet_size, 0, (struct sockaddr *)&dest_addr, sizeof(dest_addr)) < 0) {
            printf("Error sending packet\n");
            break;
        }
    }

    // 关闭 socket
    close(sockfd);
}

int main() {
    // 输入 IP 地址、端口、发包大小、发送时长
    char ip_addr[16] = {0};
    int port, packet_size, send_duration;
    printf("Enter IP address: ");
    scanf("%s", ip_addr);
    printf("Enter port: ");
    scanf("%d", &port);
    printf("Enter packet size: ");
    scanf("%d", &packet_size);
    printf("Enter send duration (in seconds): ");
    scanf("%d", &send_duration);

    // 发送数据包
    send_packets(ip_addr, port, packet_size, send_duration);

    return 0;
}

希望对您有帮助！