C++ Institute C++ Certified Professional Programmer - CPP 模擬練習

ページ: 1 / 16
トータル 230 問
完全版を入手する
What happens when you attempt to compile and run the following code?
# include <deque>
# include <iostream>
# include <algorithm>
using namespace std;
template<class T>struct Out {
ostream & out;
Out(ostream & o): out(o){}
void operator() (const T & val ) { out<<val<<" "; } };
struct Sequence { int start;
Sequence(int start):start(start){}
int operator()() {return 10*(1+(start++ %3));}
};
int main() {
deque<int> d1(10);
generate(d1.begin(), d1.end(), Sequence(1));
sort(d1.begin(), d1.end());
pair<deque<int>::iterator, deque<int>::iterator > result = equal_range(d1.begin(), d1.end(),
20);
for_each(result.first, result.second, Out<int>(cout));cout<<endl;
return 0;
}
Program outputs:

正解: E
Given three files: class.h, class.cpp and main.cpp containing small C++ project, which sentences are TRUE if you attempt to compile and run the program? Assume that the whole compiling environment is properly set.
// File: main.cpp
# include <iostream>
# include "class.h"
using namespace std;
int main()
{
A<int> a;
cout << a.getV() << endl;
return 0;
}
//File: class.h
# ifndef _CLASS_
# define _CLASS_
template <class T>
class A {
T_v;
public:
A() {}
A(T v);
T getV();
};
#endif
//File: class.cpp
# include "class.h"
template<typename T>
A<T>::A(T v):_v(v) {}
template<class T>
T A<T>::getV() { return _v; }

正解: A
What will happen when you attempt to compile and run the code below, assuming that you enter the following sequence: 1.1 2.2 3.3<enter>?
# include <iostream>
# include <string>
using namespace std;
int main ()
{
int a,b,c;
cin>>a>>b>>c;
cout<<a<<b<<c<<endl;
return 0;
}
Program will output:

正解: E
What happens when you attempt to compile and run the following code?
#include <iostream>
#include <algorithm>
#include <map>
using namespace std;
void myfunction(pair<int, int> i) {
cout << " " << i.first;
}
int main() {
int t[] = { 10, 5, 9, 6, 2, 4, 7, 8, 3, 1 };
map<int, int> m;
for(int i=0; i < 10; i++) {
m[i]=t[i];
}
for_each(m.begin(), m.end(), myfunction);
return 0;
}
Program outputs:

正解: E
What happens when you attempt to compile and run the following code?
# include <vector>
# include <iostream>
# include <algorithm>
using namespace std;
void print(int v) { cout<<v<<" "; }
struct Sequence {
int start;
Sequence(int start):start(start){}
int operator()() {
return 10*(1+(start++ %3));
}
};
int main() {
vector<int> v1(10);
generate_n(v1.begin(), 10, Sequence(1));
remove(v1.begin(), v1.end(), 10);
for_each(v1.begin(), v1.end(), print);cout<<endl;
return 0;
}
Program outputs:

正解: C
What will happen when you attempt to compile and run the code below, assuming that you enter the following sequence: one two three<enter>?
# include <iostream>
# include <string>
using namespace std;
int main ()
{
string a;
getline(cin, a);
cout<<a<<endl;
return 0;
}
Program will output:

正解: C
What happens when you attempt to compile and run the following code?
# include <vector>
# include <iostream>
# include <algorithm>
# include <functional>
using namespace std;
template<class T>struct Out {
ostream & out;
Out(ostream & o): out(o){}
void operator() (const T & val ) { out<<val<<" "; } };
struct Add {
int operator()(int a, int b) {
return a+b;
}
};
int main() {
int t[]={1,2,3,4,5,6,7,8,9,10};
vector<int> v1(t, t+10);
vector<int> v2(10);
transform(v1.begin(), v1.end(), v2.begin(), bind1st(ptr_fun (Add()), 1)); for_each(v2.rbegin(), v2.rend(), Out<int>(cout));cout<<endl;
return 0;
}
Program outputs:

正解: A
What happens when you attempt to compile and run the following code? Choose all possible answers.
#include <iostream>
using namespace std;
template <class T>
class A {
T_v;
public:
A() {}
A(T v): _v(v){}
friend ostream & operator<<(ostream & c, const A<T> & v) {
c<<v._v;return c;
}
};
int main()
{
A<int>a(10);
cout<<a<<endl;
return 0;
}

正解: B,D
What happens when you attempt to compile and run the following code?
# include <iostream>
# include <algorithm>
#include <map>
using namespace std;
int main() {
int t[] = { 10, 5, 9, 6, 2, 4, 7, 8, 3, 1 };
map<int, int> m;
for(int i=0; i < 10; i++) {
m[i]=t[i];
}
map<int, int>::iterator it = find(m.begin(), m.end(), 5);
cout<<it?>first;
return 0;
}
Program outputs:

正解: A
What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int main()
{
cout<<true<<" "<<boolalpha<<false;
return 0;
}
Program outputs:

正解: D
What happens when you attempt to compile and run the following code?
# include <vector>
# include <iostream>
# include <algorithm>
using namespace std;
template<class T>struct Out {
ostream & out;
Out(ostream & o): out(o){}
void operator()(const T & val ) {
out<<val<<" ";
}
};
struct Sequence {
int start;
Sequence(int start):start(start){}
int operator()() {
return start++ ; }};
int main() {
vector<int> v1(10);
generate(v1.rbegin(), v1.rend(), Sequence(1));
rotate(v1.begin(),v1.begin() + 1, v1.end() );
for_each(v1.begin(), v1.end(), Out<int>(cout) );cout<<endl;
return 0;
}
Program outputs:

正解: D
What happens when you attempt to compile and run the following code?
#include <iostream>
#include <algorithm>
#include <deque>
#include <vector>
using namespace std;
bool identical(int a, int b) {
return b == 2*a?true:false;
}
int main() {
int t[] = {1,2,3,2,3,5,1,2,7,3,2,1,10, 4,4,5};
int u[] = {2,4,6,4,6,10,2,4,14,6,4,2,20,8,8,5};
vector<int> v1(t, t + 15);
deque<int> d1(u, u + 15);
pair<deque<int>::iterator, vector<int>::iterator > result;
result = mismatch(d1.begin(), d1.end(), v1.begin(), identical); //Line I if (result.first == d1.end() && result.second == v1.end()) {//Line II
cout<<"Identical\n";
} else {
cout<<"Not identical\n";
}
return 0;
}
Program outputs:

正解: C
What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
template<class A>
void f(A a)
{
cout<<1<<endl;
}
void f(int a)
{
cout<<2<<endl;
}
int main()
{
int a = 1;
f<float>(a);
return 0;
}

正解: C
Which sentence is correct about the code below?
#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
class A {
int a;
public:
A(int a) : a(a) {}
int getA() const { return a; }
void setA(int a) { this?>a = a; }
/* Insert Code Here */
};
struct add10 { void operator()(A & a) { a.setA(a.getA() + 10); } };
int main() {
int t[] = { 10, 5, 9, 6, 2, 4, 7, 8, 3, 1 };
vector<A> v1(t, t + 10);
for_each(v1.begin(), v1.end(), add10());
vector<A>::iterator it = find(v1.begin(), v1.end(), A(7));
cout << it?>getA() << endl;
return 0;
}

正解: A
What happens when you attempt to compile and run the following code?
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
template<class T>struct Out {
ostream & out;
Out(ostream & o): out(o){}
void operator() (const T & val ) { out<<val<<" "; } };
int main() {
int t[]={3,2,4,1,5,10,9,7,8,6};
vector<int> v1(t,t+10);
sort(v1.begin(), v1.end(), greater<int>());
cout<<min_element(v1.begin(), v1.end());
return 0;
}
Program outputs:

正解: A
ページ: 1 / 16
トータル 230 問