Modify the below program so that it shows which digits (if any) were repeated: E

Question

Modify the below program so that it shows which digits (if any) were repeated:

Ex). Enter a number: 939577
Repeated Digit(s): 7 9

/* Checks number for repeated digtis*/

#include /*C99 only*/
#include

int main (void)
{
bool digit_seen [10]
int digit;
long n;

printf ("Enter a number: ");
scanf ("%1d", &n);
while (n > 0) {
digit = % 10;
if (digit_seen [digit])
break;
digit_seen [digit] = true;
n / = 10;
}
if (n > 0)
printf ("Repeated digit ");
else
printf ("No repeated digit ");

return 0;
}



Need help modifying the above program in C-Language (can't be C# or C++)

Explanation / Answer

please rate - thanks

/* Checks number for repeated digtis*/

#include <stdio.h>
#include <conio.h>

int main (void)
{
int digit_seen [10]={0};
int digit;
long n;

printf ("Enter a number: ");
scanf ("%ld", &n);
while (n > 0) {
digit = n% 10;
digit_seen[digit]++;
n /= 10;
}
printf("repeated digit(s): ");
for(digit=0;digit<10;digit++)
if(digit_seen[digit]>1)
    printf ("%d ",digit);
getch();
return 0;
}

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