Sol3hw3a
Write a program to compute the sum of the series 3 + 6 + 12 + 24 ….. such that the sum is as large as possible without exceeding 235. The program should write out how many terms are used in the sum.
#include <iostream.h>
main( )
{
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int n=3, sum=0, term=0; |
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while(sum<235) |
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{ |
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sum=sum+n; |
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term=term+1; n=2*n; |
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} |
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if(sum>235) //adjusting the "term" and "sum" if the final sum |
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{ sum=sum-n/2; //from the above while loop exceeds 235. |
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term=term-1; |
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} |
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cout<<"The sum is "<<sum<<" ,using "<<term<<" terms"<<endl; cout << " enter e to exit "; char hold; cin >> hold; |
}