Simple pipe implementation

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>

int main(){
    int pfds[2], status;
    char *com1[]={"ls","-a",NULL};
    char *com2[]={"sort",NULL};
    switch(fork()){
        case -1: 
            printf("Error has been occured");
            exit(1);
        case 0:
            break;//Run the child
        default:
            wait(&status);//Parent is waiting until child exit
            return (status);     
    }
    if(pipe(pfds)<0)
        exit(1);
    switch(fork()){
        case -1:
            exit(1);
        case 0:
            close(1);//Close the stdout
            dup(pfds[1]);//Duplicate the pipe write end
            close(pfds[0]);//Close pipe read end
            close(pfds[1]);//Close pipe write end
            execvp(com1[0], com1);//Execute the command
            exit(1);
        default:
            close(0);//Close the stdin
            dup(pfds[0]);//Duplicate the pipe read end
            close(pfds[0]);//Close pipe read end
            close(pfds[1]);//Close pipe write end
            execvp(com2[0], com2);//Execute the command
            exit(1);
    }
    return 0;
}