C++：统计字符串内大小写字母，数字空格，逗号等

#include
using namespace std;

int main()

{
	char c;
	int smallletters = 0, largeletters=0,space = 0, digit = 0,douhao=0, other = 0;
	cout << "请输入字符串：";
	while ((c = getchar()) != '\n')
	{
		if (c >= 'a' && c <= 'z')
		{
			smallletters++;
		}
		else if (c >= 'A' && c <= 'Z')
		{
			largeletters++;
		}
		else if (c == ' ')
		{
			space++;
		}
		else if (c >= '0' && c <= '9')
		{
			digit++;
		}
		else if (c == ',')
		{
			douhao++;
		}
		else
		{
			other++;
		}
	}
	cout <<"小写字母："<< smallletters <<"\t"<<"大写字母："<<largeletters<<"\t"<<"空格："<< space <<"\t"<<"数字："<< digit <<"\t"<<"逗号："<<douhao<<"\t"<<"其它："<< other <<"\t"<< endl;

	return 0;

}