C Looping If Statement?

I am working on a quiz with C, but I ran into a problem. Why is C looping the if statement "if (ans==true)"? I know this because the variable sum is a crazy number like 32767.

#include <stdio.h>
#include <stdbool.h>

bool askQuestion(char question[100],int answer){
    int userAns;

    printf("%s \n",question);
    scanf("%d",&userAns);

    if (userAns==answer){
      printf("Correct \n");
      return(true);
    }
    else{
      printf("Wrong \n");
      return (false);
    }
    printf("ERROR ERROR ERROR!");
}

int main(void)
{
  
    bool ans;
    int sum;

    ans = askQuestion("yoyoyo",10);
    if (ans==true){
      sum+=1;
    }



    printf("Your score was %d/5",sum);






    return 0;
}

EDIT: I didn't initialize the sum variable. My bad.