C语言中用数组求斐波那契数列的第20项的程序

#include int main(int argc, const char * argv[]) { int num_A = 1,num_B = 1; int newFibonacciNum; int Fibonacci_index = 20; for (int i = 0; i<=Fibonacci_index; i++) { newFibonacciNum = num_A + num_B; num_A = nu