C++&QT-day1

#include  //输入一串字符统计大写小写数字空格和其它字符个数
using namespace std;

int main()
{
    string str;
    int count_A = 0, count_a = 0, count_num = 0, count = 0, other =0;
    cout << "输入字符串：";
    getline(cin,str);
    unsigned int i;
    for(i=0; i