修正句首小寫為大寫

INPUT

problem solving consists of using generic or ad hoc 

methods, in an orderly manner, for finding solutions to problems. some of the problem-solving techniques 

developed and used in artificial intelligence,computer 

science, engineering, mathematics, medicine, etc.

OUTPUT

Problem solving consists of using generic or ad hoc 

methods, in an orderly manner, for finding solutions to problems. Some of the problem-solving techniques 

developed and used in artificial intelligence,computer 

science, engineering, mathematics, medicine, etc.

#include <iostream>

#include <string>

using namespace std;

int main()

{

   char ch;

   cin >> ch;

   cout << (char)(ch+('A'-'a'));

   while(cin >>noskipws>>ch){

      if (ch!='.'){

         cout << ch;

      }

      else {

         cout << ch; //.

         cin >> ch; //space

         cout << ch;

        

         cin >> ch;

         cout << (char)(ch+('A'-'a'));

      }

   }

  

//system("Pause");

}