C language: When I use scanf the output console displays “Program ended with exit code: 0[whatever I input for scanf]” How do I fix this?

Question

For example:

printf("Please enter the amount of money you want to accumulate: ");
scanf("%f", &cashGoal);
printf("You would like to save up to $%.2f\n", cashGoal);

Returns this:

Please enter the amount of money you want to accumulate: Program ended with exit code: 0123123
You would like to save up to $123123.00

Edit: Here's the full code, it's my homework project so it's a little long

#include <stdio.h>
#include <math.h>

FILE *fp;

#define PENNY 0.01

int daystoCashGoal(float);

int main(void) {
fp = fopen("csis.txt", "w");
float cashGoal;


printf("Please enter the amount of money you want to accumulate: ");
fprintf(fp, "Please enter the amount of money you want to accumulate: ");
scanf("%f", &cashGoal);
printf("\n");
fprintf(fp,"\n");
printf("You would like to accumulate $%.2f.\n\n", cashGoal);
fprintf(fp, "You would like to accumulate $%.2f.\n\n", cashGoal);

daystoCashGoal(cashGoal);

fclose(fp);
return 0;
}

//Calculates the number of days it will take to accumulate the user-desired amount, doubles the deposit for each day, and sums up the balance for each day
int daystoCashGoal(float cashGoal){
int day = 1;
float dailyBalance = 0, dailyDeposit;

printf("DAY          DEPOSIT          BALANCE\n");
fprintf(fp, "DAY          DEPOSIT          BALANCE\n");
printf("___          _______          _______\n");
fprintf(fp, "___          _______          _______\n");

 while (dailyBalance <= cashGoal) {
    dailyDeposit = (pow( 2, day - 1)) * PENNY;
    dailyBalance += dailyDeposit;

    printf("%3d %5s %10.2f %5s %10.2f\n", day,"", dailyDeposit,"", dailyBalance);
    fprintf(fp, "%3d %5s %10.2f %5s %10.2f\n", day,"", dailyDeposit,"", dailyBalance);

     if (dailyBalance <= cashGoal) {
                 day ++;
     }
     else if (dailyBalance >= cashGoal) {
         continue;
     }

}

if (dailyBalance >= cashGoal) {
    printf("\nIt took %d days to accumulate at least $%.2f.\n", day, cashGoal);
    fprintf(fp, "\nIt took %d days to accumulate at least $%.2f.\n", day, cashGoal);
}

return day;
}

I'm not looking for advice on the rest of my code since this project has already been graded, but the exit code issue is affecting the rest of my projects and I'm not sure what I'm doing wrong. Thanks