Answer:
// here is code in C++.
#include <bits/stdc++.h>
using namespace std;
// function to compute sum and product
void sum_prod(int input)
{
int sum=0;
long long product=1;
// compute sum of all from 1 to input number
for(int i=1;i<=input;i++)
{
sum=sum+i;
}
// print sum
cout<<"sum of all from 1 to "<<input<<" is:"<<sum<<endl;
// compute product of all from 1 to input number
for(int i=1;i<=input;i++)
{
product=product*i;
}
// print product
cout<<"product of all from 1 to "<<input<<" is:"<<product<<endl;;
}
// driver function
int main()
{
int n;
cout<<"enter the number (0 to stop):";
// read the input number
cin>>n;
// repeat until the user enter 0
while(n)
{
// call the function to compute sum and product
sum_prod(n);
cout<<"enter the number (0 to stop):";
cin>>n;
}
return 0;
}
Explanation:
Read a number from user. Then call the function to calculate the sum and product of all number from 1 to input. In the function sum_prod(),create two variables "sum" and "product" to calculate the sum and product. Then print the output.This function will be called until user enter 0 an input.
Output:
enter the number (0 to stop):5
sum of all from 1 to 5 is:15
product of all from 1 to 5 is:120
enter the number (0 to stop):10
sum of all from 1 to 10 is:55
product of all from 1 to 10 is:3628800
enter the number (0 to stop):0
