Program of product of digits | In C

Practice Program

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Program of Product of digits

Solution: through while loop

void main()
{
    int n,a,product=1;

    printf("Enter the  Number: ");
    scanf("%d",&n);


    while(n!=0)
    {
        a = n%10;//as modulo operator gives
                 //last digit of number
                //when we modulo number with 10.
        product = product*a;
        
        n = n/10;
             //when we divide a number with 10
             //then it removes the last digit from
            //the number
    }
printf("Product of digits is %d",product);

}

Output1

Enter the Number:321

Product of digits is 6.

Output2

Enter the Number:3421

Product of digits is 24.

Output3

Enter the Number:456

Product of digits is 120.

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Solution: from do-while loop

void main()
{
    int n,a,product=1;

    printf("Enter the  Number: ");
    scanf("%d",&n);


    do
    {
        a = n%10;//as modulo operator gives
                 //last digit of number
                //when we modulo number with 10.
       product = product*a;
        
        n = n/10;
             //when we divide a number with 10
             //then it removes the last digit from
            //the number
    }while(n!=0);
printf("Product of digits is %d",product);

}

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defining a function 'count_digit' which will return sum of digits.

int digit_product(int n)
{
    int a,product = 1;
     while(n!=0)
    {
        a = n%10;//as modulo operator gives
                 //last digit of number
                //when we modulo number with 10.
        product = product*a;

        n = n/10;
             //when we divide a number with 10
             //then it removes the last digit from
            //the number
    }

    return product;
}

Using above define function 'digit_product':

void main()
{
    int n,result;

    printf("Enter the  Number: ");
    scanf("%d",&n);


    //calling function
    result = digit_product(n);

printf("Product of digits is %d",result);

}

Output1

Enter the Number:321

Product of digits is 6.

Using above define function 'digit_product':

void main()
{
    int n,result;

    printf("Enter the  Number: ");
    scanf("%d",&n);


    //calling function
    result = digit_product(n);

printf("Product of digits is %d",result);

}

Output2

Enter the Number:456

Product of digits is 120.

Using above define function 'digit_product':

void main()
{
    int n,result;

    printf("Enter the  Number: ");
    scanf("%d",&n);


    //calling function
    result = digit_product(n);

printf("Product of digits is %d",result);

}

Output3

Enter the Number:326

Product of digits is 36.

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