Char 2

#include<stdio.h>

int main ()
{
    char ch;
    scanf("%c", &ch);

    if (ch == '1' || ch == '2' || ch == '3' || ch == '4' || ch == '5' || ch == '6' || ch == '7' || ch == '8' || ch == '9' || ch == '0'){
        printf("didit\n");
    }
    else{
        printf("not a digit\n");
    }
    return 0;
}