int Fibonacci(int n) { ··if( n == 1 || n == 2) ···return 1; ··else ···return Fibonacci(n-1)+Fibonacci(n-2); }
int Fibonacci(int n) { ··if( n == 1 || n == 2) ···return 1; ··else ·{ int result=0; int temp1=1; int temp2=1; for(int i=2;i<n;i++) { result=temp1+temp2; temp1=temp2; temp2=result; } } return result; }