/*
CS371p: Quiz #16 (5 pts)
*/

/* -----------------------------------------------------------------------
1. Define the function count_if().
   (4 pts)
*/

#include <cassert> // assert
#include <cctype>  // isupper
#include <cstring> // strlen

template <typename II, typename UP>
int count_if (II b, II e, UP f) {
    int c = 0;
    while (b != e) {
        if (f(*b))
            ++c;
        ++b;}
    return c;}

int main () {
    using namespace std;

    assert(!isupper('a'));
    assert( isupper('A'));

    typedef int (*CUP) (int);

    const char a[] = "abCbA";
    const int  s   = strlen(a);
    const CUP  p   = isupper;

    assert(count_if(a, a + s, isupper) == 2);
    assert(count_if(a, a + s, p)       == 2);

    return 0;}