shared memory programme is not working in c

Question

There are two programs are there one is call server which put content in shared memory and other is client which received a content from shared memory both in both programs it is attached successfully with shared memory but data is not display in client side.

Client.c

#include<fcntl.h>
#include<sys/ipc.h>
#include<sys/shm.h>
void main(int argc,char * argv[])
{
     int shmid=shmget(124,70,0777);
     char * data;
     printf("%d\n",shmid);  
     data=shmat(shmid,0,0);
     printf("%s",data);
}

Server.c

#include<fcntl.h>
#include<sys/ipc.h>
#include<sys/shm.h>
void main(int argc,char * argv[])
{
    int shmid=shmget(124,70,0777|IPC_CREAT);
    char * data,*ptr;
    printf("%d\n",shmid);
    if((data=shmat(shmid,0,0))==(char *)-1);
    {
        printf("No attach\n");
    }
    ptr=data;
    memset(data,0,1024);
    printf("%s",data);
    char c[]="My name is milap pancholi";
    int i=0;
    for(i=0;i<sizeof(c);i++)
    {
        printf("%c",c[i]);
        data+=c[i];
    }
    printf("%s\n",ptr);
}

Answer 1

Your main problem is this:

data+=c[i];

This does pointer arithmetic, advancing data , not what you want at all. Replace it with:

data[i] = c[i];

Other issues:

• main returns int , not void. Use int main() { ... } if you don't need the arguments count and values (to avoid warnings, which you should turn way up).
• You're missing #include <stdio.h> for printf
• You're missing #include <string.h> for memset