Question

下列程序的功能是：输出斐波那契数列（1,1,2,3,5,8,13,21……）的前20项。请填空。

main()
{long a,b,n;
a=1;b=1;n=0;
while__________
{
printf("%ld %ld ",a,b);
_____________
b=b+a;
_____________
}
printf("\n");
}

Answer 1

while(n<20)
{
printf("%ld %ld ",a,b);
a=a+b;
b=b+a;
n++;
}
printf("\n");