int main()
{
    int num;
    int x=1000, y=10, z=100;
    int a1, b1, c1, d1;
    char a, b, c, d;
    printf("Enter 4 digits:");
    scanf("%c",&a);
    rewind(stdin);
    scanf("%c",&b);
    rewind(stdin);
    scanf("%c",&c);
    rewind(stdin);
    scanf("%c",&d);
    a = (a - 48);
    a1 = (int)a*x;
    b = (b - 48);
    b1 = (int)b*y;
    c = (c - 48);
    c1 = (int)c*z;
    d = (d - 48);
    d1 = (int)d;
    num = a1 + b1 + c1 + d1;
    printf("The number is: %c,%c,%c,%c",a1,b1,c1,d1);

    return 0;
}