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#2
lockhawk2008-11-12 19:19
初学~献丑了
 #include <iostream.h> int tuzi(int x); int main() { int N; cout<<"please putin N="; cin>>N; cout<<"after "<<N<<" years:"<<tuzi(N)<<endl; return 0; } int tuzi(int x) { if(x==0||x==1||x==2||x==3) return 1; return(tuzi(x-1)+tuzi(x-4)); } //f(n)=f(n-1)+f(n-4) |
用递归函数，一只母兔4岁后每年生一只小母兔，N年后有多少只？
帮帮忙，
谢谢了，