编辑代码

#include <iostream>
using namespace std;
int main() {
char c;
int zimu=0,shuzi=0,kongge=0,qita=0;
for(;!(c=getchar()=='\n');)
{if(('a'<=c<='z')||('A'<=c<='Z'))
 zimu++;
 else if('0'<=c<='9')
 shuzi++;
 else if(c==' ')
 kongge++;
 else
 qita++;}
 cout<<shuzi;
    	return 0;
}