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https://github.com/TheAlgorithms/C
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37 lines
806 B
C
37 lines
806 B
C
/**
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* \file
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* \brief [Problem 2](https://projecteuler.net/problem=2) solution
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*
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* Problem:
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*
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* Each new term in the Fibonacci sequence is generated by adding the previous
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* two terms. By starting with 1 and 2, the first 10 terms will be:
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* `1,2,3,5,8,13,21,34,55,89,..`
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* By considering the terms in the Fibonacci sequence whose values do not exceed
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* n, find the sum of the even-valued terms. e.g. for n=10, we have {2,8}, sum
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* is 10.
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*/
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#include <stdio.h>
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/** Main function */
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int main()
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{
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int n = 0;
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int sum = 0;
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int i = 1;
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int j = 2;
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int temp;
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scanf("%d", &n);
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while (j <= n)
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{
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if ((j & 1) == 0) // can also use(j%2 == 0)
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sum += j;
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temp = i;
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i = j;
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j = temp + i;
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}
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printf("%d\n", sum);
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return 0;
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} |