online compiler and debugger for c/c++

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#include <stdio.h> #include <unistd.h> #include <spawn.h> #include <fcntl.h> #include <sys/wait.h> extern char **environ; int main() { posix_spawn_file_actions_t actions; posix_spawnattr_t attr; int success, status; pid_t pid; char *argv[] = {"echo", "hello", "world", NULL}; posix_spawn_file_actions_init(&actions); posix_spawn_file_actions_addopen(&actions, STDOUT_FILENO, "hello.txt", O_WRONLY | O_CREAT | O_TRUNC, 0644); posix_spawnattr_init(&attr); success = posix_spawn(&pid, "/bin/echo", &actions, &attr, argv, environ); if (success != 0) { perror("posix_spawn failed"); return 1; } posix_spawn_file_actions_destroy(&actions); posix_spawnattr_destroy(&attr); printf("Created child process ID: %d\n", pid); waitpid(pid, &status, 0); if (WIFEXITED(status)) { printf("Child exited with status: %d\n", WEXITSTATUS(status)); } else { printf("Child exited abnormally\n"); } return 0; }

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