编程之美第三章-3.2-电话号码以及对应的单词

#include<iostream>#include<string>using namespace std;const int max_length=9;char c[10][10]={"",//0"",//1"ABC",//2"DEF",//3"GHI",//4"JKL",//5"MNO",//6"PQRS",//7"TUV",//8"WXYZ",//9};int total[10]={0,0,3,3,3,3,3,4,3,4};int count=0;int main(){int number[max_length]={2,3,4};int answer[max_length]={0};int length=3;while(true){for(int i=0;i<length;++i)cout<<c[number[i]][answer[i]]<<" ";count++;cout<<endl;int k=length-1;while(k>=0){if(answer[k]<total[number[k]]-1){answer[k]++;break;}else{answer[k]=0;k--;}}if(k<0)break;}cout<<count<<endl;system("pause");return 0;}