1 /* 2 @author:CodingMengmeng 3 @theme:各种进制之间的转换 4 @time:2017-1-6 21:39:08 5 @blog:http://www.cnblogs.com/codingmengmeng/ 6 */ 7 #include <iostream> 8 using namespace std; 9 10 //十进制数转换成二进制数 11 void decimal2Binary(int n) 12 { 13 if (n < 2) 14 cout << n; 15 if (n >= 2) 16 { 17 decimal2Binary(n / 2); 18 cout << n % 2; 19 } 20 } 21 22 //十进制数转换成八进制数 23 void decimal2Octal(int n) 24 { 25 if (n < 8) 26 cout << n; 27 if (n >= 8) 28 { 29 decimal2Octal(n / 8); 30 cout << n % 8; 31 } 32 } 33 34 //十进制转换成十六进制数 35 void decimal2Hex2(int n) 36 { 37 switch (n) 38 { 39 case 10: cout << "A"; break; 40 case 11: cout << "B"; break; 41 case 12: cout << "C"; break; 42 case 13: cout << "D"; break; 43 case 14: cout << "E"; break; 44 case 15: cout << "F"; break; 45 default:cout << n; 46 } 47 } 48 49 void decimal2Hex(int n) 50 { 51 if (n < 16) 52 decimal2Hex2(n); 53 if (n>16) 54 { 55 decimal2Hex(n / 16); 56 decimal2Hex2(n % 16); 57 } 58 } 59 60 int main(void) 61 { 62 int n; 63 cout << "input a value of n ：" << endl; 64 cin >> n; 65 cout << "the results that decimal converts to binary,octal and Hex are as follows:" << endl; 66 decimal2Binary(n); 67 cout << endl; 68 decimal2Octal(n); 69 cout << endl; 70 decimal2Hex(n); 71 cout << endl; 72 73 getchar(); 74 return 0; 75 }
运行结果：
