不能判断是不是数字，望指点
#include<iostream.h>
#include<ctype.h>
void main()
{
int x;
cin>>x;
if(isdigit(x))
cout<<x<<" true "<<endl;
cout<<isdigit(x)<<endl;
}
#include<iostream.h>
#include<ctype.h>
void main()
{
int x;
cin>>x;
if(isdigit(x))
cout<<x<<" true "<<endl;
cout<<isdigit(x)<<endl;
}
2007-01-03 07:36