下列程序段 A 与 B 功能等价,请填写程序段 B 中相应语句。 程序段 A : int f( int n) { if (n<=1) return n; else return f(n-1)+f(n-2); } 程序段 B : int f( int n) { int t0,t1,t ; t0=0;t1=1; while (n>1) { t= ; t0=t1; t1=t; n--; } return ; }
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