Program
#include <stdio.h>    
int main()
{
    char character;
    printf("Enter a Character\n");
    scanf("%c", &character);
 if(character >= '0' && character <= '9')
 {
        printf("%c is a Digit \n", character);
    }
 else
 {
        printf("%c is a NOT Digit \n", character);
    }
}
Output:
Enter a Character
8
8 is a NOT Digit
 
 
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