Fibonacci : Sum of even-valued terms of Fibonacci Sequence
Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be: 1, 2, 3, 5, 8, 13, 21, 34, 55, 89... By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms. Source Code in C: #include<stdio.h> void main() { long f1 = 1, f2 = 2, f3, range,sum=0; clrscr(); printf("Enter the maximum range: "); scanf("%ld", &range); while(1) { f3 = f1 + f2; if(f3 > range) break; if (f3%2==0) sum+=f3; if (f3==3) sum+=2; f1 = f2; f2 = f3; } printf("The sum of all even digit : %ld",sum); getch(); } Answer: 4613732