// 十进制转化为各进制.cpp : Defines the entry point for the console application.
//
#include <iostream>
#include<cstdlib>
using namespace std;
int main()
{
while(1)
{
int input;
cout<<"请输入待转化的十进制数:"<<endl;
cin>>input;
cout<<"请选择进行哪种进制转化:"<<endl
<<"2:二进制,8:八进制,16:十六进制"<<endl;
int num2,num8,num16,bite_num2=1,bite_num8=1,bite_num16=1;
num2=num8=num16=input;
int num_form,i=0;
cin>>num_form;
switch(num_form)//VC中编译switch语句时case后面的语句不止一条时要加上{}
{ //虽然定义caes后可不加{}
case 2:
{
while(num2/2!=0)
{
num2=num2/2;
++bite_num2;
}
char *bite2=new char[bite_num2];
for(i=0;i<bite_num2;i++)
bite2[i]=0;
itoa(input,bite2,2);
for(i=0;i<bite_num2;i++)
cout<<bite2[i];
cout<<endl;
//delete []bite2;
//bite2=NULL;
break;
}
case 8:{
while(num8/8!=0)
{
num8=num8/2;
++bite_num8;
}
char *bite8=new char[bite_num8];
for(i=0;i<bite_num8;i++)
bite8[i]=0;
itoa(input,bite8,8);
for(i=0;i<bite_num8;i++)
cout<<bite8[i];
cout<<endl;
//delete []bite8;
//bite8=NULL;
break;
}
case 16:{
while(num16/2!=0)
{
num16=num16/2;
++bite_num16;
}
char *bite16=new char[bite_num16];
for(i=0;i<bite_num16;i++)
bite16[i]=0;
itoa(input,bite16,16);
for(i=0;i<bite_num16;i++)
cout<<bite16[i];
cout<<endl;
//delete []bite16;
//bite16=NULL;
break;
}
}
}
return 0;
}
//vc中貌似不认得了delete[]p形式,用了new之后可不用吧,还有new出新的内存之后最好立马
//对其初始化,以防乱码“屯,烫。。”都是因为未对指针,数组初始化的原因。