#include #include #include void print_flag() { char buf[32]; FILE *file = fopen("/home/valley/flag.txt", "r"); if (file == NULL) { perror("Failed to open flag file"); exit(EXIT_FAILURE); } fgets(buf, sizeof(buf), file); printf("Congrats! Here is your flag: %s", buf); fclose(file); exit(EXIT_SUCCESS); } void echo_valley() { printf("Welcome to the Echo Valley, Try Shouting: \n"); char buf[100]; while(1) { fflush(stdout); if (fgets(buf, sizeof(buf), stdin) == NULL) { printf("\nEOF detected. Exiting...\n"); exit(0); } if (strcmp(buf, "exit\n") == 0) { printf("The Valley Disappears\n"); break; } printf("You heard in the distance: "); printf(buf); fflush(stdout); } fflush(stdout); } int main() { echo_valley(); return 0; }