cpp4.cpp

2007中兴面试题 答案.有完整的代码和调试。

#include <iostream> 
#include <cstdlib> // for exit(), srand(), rand() 
#include <ctime> 

using namespace std; 

int main() 
{ 
 int rNum, m = 20; 
 char *ch = new char[m]; 
 char n[20]; 
  
 srand((unsigned)time(NULL)); 
  
 for (int i = 0; i < 20; i++) 
 { 
 rNum = 1 +(int)((rand()/(double)RAND_MAX)*36); 
 switch (rNum) 
 { 
 case 1:  
 ch[i] = 'a'; 
 break; 
 case 2:  
 ch[i] = 'b'; 
 break; 
 case 3:  
 ch[i] = 'c'; 
 break; 
 case 4:  
 ch[i] = 'd'; 
 break; 
 case 5:  
 ch[i] = 'e'; 
 break; 
 case 6:  
 ch[i] = 'f'; 
 break; 
 case 7:  
 ch[i] = 'g'; 
 break; 
 case 8:  
 ch[i] = 'h'; 
 break; 
 case 9:  
 ch[i] = 'i'; 
 break; 
 case 10:  
 ch[i] = 'j'; 
 break; 
 case 11:  
 ch[i] = 'k'; 
 break; 
 case 12:  
 ch[i] = 'l'; 
 break; 
 case 13:  
 ch[i] = 'm'; 
 break; 
 case 14:  
 ch[i] = 'n'; 
 break; 
 case 15:  
 ch[i] = 'o'; 
 break; 
 case 16:  
 ch[i] = 'p'; 
 break; 
 case 17:  
 ch[i] = 'q'; 
 break; 
 case 18:  
 ch[i] = 'r'; 
 break; 
 case 19:  
 ch[i] = 's'; 
 break; 
 case 20:  
 ch[i] = 't'; 
 break; 
 case 21:  
 ch[i] = 'u'; 
 break; 
 case 22:  
 ch[i] = 'v'; 
 break; 
 case 23:  
 ch[i] = 'w'; 
 break; 
 case 24:  
 ch[i] = 'x'; 
 break; 
 case 25:  
 ch[i] = 'y'; 
 break; 
 case 26:  
 ch[i] = 'z'; 
 break; 
 case 27:ch[i] = '0'; 
 break; 
 case 28:ch[i] = '1'; 
 break; 
 case 29:ch[i] = '2'; 
 break; 
 case 30:ch[i] = '3'; 
 break; 
 case 31:ch[i] = '4'; 
 break; 
 case 32:ch[i] = '5'; 
 break; 
 case 33:ch[i] = '6'; 
 break; 
 case 34:ch[i] = '7'; 
 break; 
 case 35:ch[i] = '8'; 
 break; 
 case 36:ch[i] = '9'; 
 break; 
 }// end of switch 
 }// end of for loop 

 cout << ch <<endl; 
 for(i=0;i<20;i++) 
 cin>>n[i]; 
 for(i=0;i<20;) 
 { 
 if(ch[i]=n[i]) 
 { 
 i++; 
 } 
 if(ch[i]!=n[i]) 
 { 
 cout<<"wrong!"; 
 } 
 } 


}