C与C++在char上的不同.

程序1:

 #include <stdio.h>
int main()
{
 printf("%d\n",sizeof('A'));
 printf("%d\n",sizeof(char));
 printf("%d\n",sizeof(65));
 return 0;
}

结果:

 

程序2:

#include <iostream>
using namespace std;
int main()
{
 cout<<sizeof('A')<<endl;
 cout<<sizeof(char)<<endl;
 cout<<sizeof(65)<<endl;
 return 0;
}