#include<sys/socket.h>
#include<sys/types.h>
#include<netinet/in.h>
#include<unistd.h>
#include<stdlib.h>
#include<stdio.h>
int main(int argc,char *argv[])
{
    int create_socket,cont;
    int bufsize = 1024;
    char *buffer = malloc(bufsize);
    char fname[256];
    struct sockaddr_in address;
    if ((create_socket = socket(AF_INET,SOCK_STREAM,0)) > 0)
      printf("Socket was created\n"); -->after printing this it gives seg fault.
    address.sin_family = AF_INET;
    address.sin_port = htons(15000);
    inet_pton(AF_INET,argv[1],&address.sin_addr);
    if (connect(create_socket,(struct sockaddr *)&address,sizeof(address))== 0)
    printf("The connection was accepted with the server %s...\n",argv[1]);
    printf("Enter The Filename to Request : "); scanf("%s",fname);
    send(create_socket, fname, sizeof(fname), 0);
    printf("Request Accepted... Receiving File...\n\n");
    printf("The contents of file are...\n\n");
    while((cont=recv(create_socket, buffer, bufsize, 0))>0) {
       write(1, buffer, cont);
    }
    printf("\nEOF\n");
    return close(create_socket);
}

if (argc < 2  ||  !isdigit(argv[1][0]))
{
    fprintf(stderr, "ERROR: An IP address is required\n");
    exit(1);
}