Incompatible types when assigning to type 'struct compartido'
- by user1660559
I have one problem with this code. I should create one structure and share it across 5 new process created from the father:
#include <stdio.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/sem.h>
#include <time.h>
struct compartido {
int pid1, pid2, pid3, pid4, pid5;
int propietario;
int contador;
int pidpadre;
};
struct compartido var;
int main(int argc, char *argv[]) {
key_t llave1,llavesem;
int idmem,idsem;
llave1=ftok("/tmp",'a');
idmem=shmget(llave1,sizeof(int),IPC_CREAT|0600);
if (idmem==-1) {
perror ("shmget");
return 1;
}
var=shmat(idmem,0,0); /*This line is giving the error*/
/*rest of the code*/
}
The exact error is giving is:
error: incompatible types when assigning to type 'struct compartido' from type 'void *'
I need to put this structure in the shared variable to be able to see and modify all those data from the 6 process (5 children and the father).
What I'm doing bad? Thanks in advance and best regards,
