Practice Program






  • Program of calculating Product of n natural numbers

    • Solution: through for loop 
    void main()
{
    int n,i,product = 1;;
    printf("Product of how many numbers: ");
    scanf("%d",&n);
    
    //at every iteration we are assigning 
    //(current_product_value * i ) to new value of product. 
    for(i=1;i<=n;i++)
    {
        product = product*i;
    }
    
    
    printf("Product of first %d natural numbers are %d",n,product);
   

}

    Output1
    Product of how many numbers:5

    Product of first 5 natural numbers are 120.
    Output2
    product of how many numbers:10

    Product of first 10 natural numbers are 3628800.
    Output3
    Product of how many numbers:15

    Product of first 15 natural numbers are 2004310016.




    Solution : through while loop 
    void main()
{
    int n,i,product = 1;;
    printf("Product of how many numbers: ");
    scanf("%d",&n);
      i=1;
    //at every iteration we are assigning
    //(current_value + i ) to new value of sum.
    while(i<=n)
    {
        product = product*i;
        i++;
    }


    printf("Product of first %d natural numbers are %d",n,product);


}





    Solution:from do-while loop 
    void main()
{
    int n,i,product = 1;;
    printf("Product of how many numbers: ");
    scanf("%d",&n);
      i=1;
    //at every iteration we are assigning
    //(current_product_value + i ) to new value of product.
    do
    {
        product = product*i;
        i++;
    }while(i<=n)


    printf("Product of first %d natural numbers are %d",n,product);


}





    defining a function 'product' which will return product of n numbers.

    int product(int n)
{
    int i,product=1;

     //at every iteration we are assigning
    //(current_product_value * i ) to new value of product.
    for(i=1;i<=n;i++)
    {
        product = product*i;
    }
    return product;
}

    Using above define function 'product':
    void main()
{
    int n,result;
    printf("How many  numbers of product you want: ");
    scanf("%d",&n);


   result  = product(5);


   printf("product of first %d numbers are %d",n,result);



}

    Output1
    How many  numbers of product you want: 5

    product of first 5 natural numbers are 15.

    Using above define function 'product':
    void main()
{
    int n,result;
    printf("How many  numbers of product you want: ");
    scanf("%d",&n);


   result  = product(10);


   printf("productof first %d numbers are %d",n,result);



}

    Output2
    How many  numbers of product you want: 10

    product of first 10 natural numbers are 3628800.

    Using above define function 'product':
    void main()
{
    int n,result;
    printf("How many  numbers of sum you want: ");
    scanf("%d",&n);


   result  = product(15);


   printf("product of first %d numbers are %d",n,result);



}

    Output3
    How many  numbers of product you want: 15

    product of first 15 natural numbers are 2004310016.