use perror

term.c

@@ -15,16 +15,18 @@ int main(int argc, char **argv) {
     pid_t pid = forkpty(&fdm, NULL, NULL, NULL); 
 
     if (pid < 0) { // failure
-        printf("fork failed");
+        perror("fork failed");
         return 1;
     } else if (pid == 0) { // child
         setenv("TERM", "ansi", 1);
         execlp("bash", "bash", NULL); // exec bash 
+        perror("exec bash failed");
     } else { // parent
         struct winsize ws = {23, 80, 8, 12}; // rows, cols, xps, ypx
         ioctl(fdm, TIOCSWINSZ, &ws); // set term window size
         dup2(fdm, 0); // use fdm for stdin
         dup2(fdm, 1); // use fdm for stdout
         execlp("uxnemu", "uxnemu", rom, NULL); // exec uxnemu
+        perror("exec uxnemu failed");
     }
 }