3.1.14.

#include "stdafx.h"
#include <iostream>

int _tmain(int argc, _TCHAR* argv[])
{
    char str[50];
    std::cout<<"Enter a string: ";
    std::cin.getline(str, 50);
    int i=0, count=0;
    while (str[i]!='\0') {
        if ((i==0 || str[i-1]==' ') && str[i]>=65 && str[i]<90) {
            count++;
        }
        i++;
    }
    std::cout<<"The result is: "<<count<<"\n";
    system("pause");
    return 0;
}