Question

Write a program to generate the first 'n' terms of the following series 0.5, 1.5, 4.5, 13.5, ...

Answer 1

Answer:

#include

int main()

{

int b=2, ans=0, n, i=1, s=1;

printf("Enter number of terms\n");

scanf ("%d",&n);

printf("\n The series is: \n");

do

{

printf("%d \t",s);

ans = ans+s;

s = s+b;

b = b+1;

i = i + 1;

} while (i<=n);

printf ("\n The sum of the series is %d", ans);

return 0;

}

Answer 2

C++ program to generate first 'n'  terms of the series 0.5, 1.5, 4.5, 13.5,...

#include <iostream>

#include <cmath>

int main()

{

int n;

std::cin>>n;

double r=0.5;

for(int i=0;i<n;i++)

{

if(i==0)

{

std::cout<<r;

continue;

}

else

{

double t=pow(3,i-1);

double x=t+r;

r=x;

std::cout<<" "<<x;

}

}

}

• In the above program some header files and included and for loop has been used with the suitable condition.
• The output of the co-de will be the series 0.5, 1.5, 4.5, 13.5, up to the number of terms entered by the user.