type_dec.cpp

来自「数据结构常用算法合集」· C++ 代码 · 共 15 行

 //type_dec.cpp		文件名称
 #include <iostream.h>					//cout
 #include <conio.h>					//getch()
 void main()
 { int x=4,y=5;						//整数变量声明并设初值
   char ch='A',letter='0';						//字符变量声明并设初值
   float radius =11.2, area=0;					//浮点数变量声明并设初值
   cout << "x=" << x << ",y=" <<y << endl;		//输出各变量数据
   cout << "ch=" << ch << ",letter=" << letter << endl;
   cout << "radius=" << radius << ",area=" << area << endl;
  int unknown;							//声明未设初值的变量
   cout << "unknown=" << unknown << endl;	//输出结果将未定
   getch();								//暂停
}