Segmentation fault

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <errno.h>
#include <time.h>
#include <unistd.h>
int words = 0;
int mistakes = 0;
void end(int sig) {
  printf("\nTime out. Words - %d/60 sec , Mistakes - %d\n", words, mistakes);
  puts("Wrie your name");
  char name[10];
  scanf("%s",&name);
  FILE *fp = fopen("Scores.txt", "a");
  fprintf(fp, "Name - %s, Words - %d, Mistakes - %d\n", name,words,mistakes);
  exit(0);
}
int catch_signal(int sig, void(*handler)(int))
{
  struct sigaction action;
  action.sa_handler = handler;
  sigemptyset(&action.sa_mask);
  action.sa_flags = 0;
  return sigaction (sig, &action, NULL);
}
int main()
{
  printf("OK! START\n");
  catch_signal(SIGALRM, end);
  alarm(60);
    char petyx[][80] = {
        "Test",
        "New",
        "Save",
        "File",
    "Close",
    "Sessions",
    "Programm",
    "Documents",
    "Internet",
    "Find",
    "Report",
    "Warning",
    "Settings",
    "Try",
    "Terminal",
    "Computer",
    "Out",
    "Response",
    "Run",
    "Down",
    "Office",
    "Graphics",
    "Win",
    "Game",
    "Site",
    "Sound",
    "Video",
    "Armagedon",
    "Reload",
    "Up"
    };
    char* l;
    while(1) {
        int a = rand() %30;
        printf("%s\n",petyx[a]);
        scanf("%s", l);
        if (strcmp(petyx[a], l) == 0) {
      words++;
    } else {
      mistakes++;
    }
    
    }
}

gcc -g -Wall -o app -app.c

char l[300];

scanf("%s",name);

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <signal.h>
#include <unistd.h>
 
int stopFlag;
 
void out_of_time(int sigNum) {
    stopFlag = 1;
}
 
typedef char wrd_t[32];
#define get_word(w) ( scanf("%31s", (w)) == 1 )
 
const char * CONTROL_WORDS[] = {
    "Test",
    "New",
    "Save",
    "File",
    "Close",
    "Sessions",
    "Programm",
    "Documents",
    "Internet",
    "Find",
    "Report",
    "Warning",
    "Settings",
    "Try",
    "Terminal",
    "Computer",
    "Out",
    "Response",
    "Run",
    "Down",
    "Office",
    "Graphics",
    "Win",
    "Game",
    "Site",
    "Sound",
    "Video",
    "Armagedon",
    "Reload",
    "Up"
};
 
#define SECONDS_TO_GO (60)
 
int main(void) {
    int allWords, enteredWords, correctWords;
    wrd_t usersWord;
    
    if ( signal(SIGALRM, out_of_time) == SIG_ERR ) {
        perror("signal");
        exit(EXIT_FAILURE);
    }
    
    srand(time(NULL));
    
    allWords = sizeof(CONTROL_WORDS) / sizeof(char*);
    enteredWords = 0;
    correctWords = 0;
    stopFlag = 0;
    
    printf("Press enter when ready...");
    scanf("%*c");
    alarm(SECONDS_TO_GO);
    
    while ( ! stopFlag ) {
        int idx = rand() % allWords;
        printf("\n%s\n", CONTROL_WORDS[idx]);
        if ( ! get_word(usersWord) ) {
            fprintf(stderr, "Input error!\n");
            exit(EXIT_FAILURE);
        }
        enteredWords += 1;
        correctWords += ( ! strcmp(CONTROL_WORDS[idx], usersWord) );
    }
    
    printf("\n---------------------------------------\n");
    printf("Words entered: %d\nCorrect words: %d\n", enteredWords, correctWords);
    
    exit(EXIT_SUCCESS);
}