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#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/wait.h>
int main(int argc, char* argv[]) {
int fileDes[2];
if (pipe(fileDes) < 0) {
perror("pipe");
return 1;
}
int f = fork();
if (f == 0) { // child
if (close(fileDes[1]) < 0) {
perror("close");
return 2;
}
char buf[1024];
int count = argc - 1;
while (count > 0) {
read(fileDes[0], &buf, 1024);
if (buf[0] != '\0') {
printf("%s", buf);
count--;
}
}
}
else {
if (close(fileDes[0]) < 0) {
perror("close");
return 3;
}
for (size_t i = 1; i < argc; i++) {
write(fileDes[1], argv[i], strlen(argv[i]));
sleep(1);
}
int status;
wait(&status);
}
return 0;
}
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