to_number.cpp

来自「在c环境下的对数据结构进行讲解,包含有例题及答案」· C++ 代码 · 共 19 行

  //To_Number.cpp
 #include <iostream.h>
 #include <conio.h>
 void main()
 { int i,number,n;
   char ch;
   cout <<"输入5个数字字符('0'..'9'):";
   for (i=0,number=0;i<5;i++)		//在初值内设置number=0
   { cin >> ch;						//读取字符
     n = ch - '0';					//转换为数字'1'=>1,'2'=>2...
     number = number * 10 + n;		//转换为数值
   }
   cout <<"原整数值为:"
          << number << endl;
   cout <<"倍数数值为:"
          << (number*2) << endl;
   getch();
 }