What happens when you attempt to compile and run the following code?
#include
#include
#include
using namespace std;
template
ostream and out;
Out(ostream and o): out(o){}
void operator()(const T and val ) {
out< } }; struct Sequence { int start; Sequence(int start):start(start){} int operator()() { return 10*(1+(start++ %3)); } }; int main() { vector generate(v1.begin(), v1.end(), Sequence(1)); unique(v1.begin(),v1.end()); for_each(v1.begin(), v1.end(), Out return 0; } Program outputs:
B. 20 30 10
C. 30 10 20
D. compilation error
What happens when you attempt to compile and run the following code? Choose all possible answers.
#include
using namespace std;
template
class A {
T_v;
public:
A() {}
A(T v): _v(v){}
friend ostream and operator<<(ostream and c, const A
c< } }; int main() { A cout< return 0; }
B. program will not compile
C. program will compile
D. program will run without output
What will happen when you attempt to compile and run the following code?
#include
#include
#include
using namespace std;
int main ()
{
vector
deque
for(int i=0; i<5; i++)
{
v1.push_back(i);v1.push_front(i);
d1.push_back(i);d1.push_front(i);
}
for(int i=0; i { cout< } cout< return 0; } What will be its output:
B. runtime exception
C. compilation error due to line 11
D. compilation error due to line 12
What happens when you attempt to compile and run the following code? #include
#include
#include
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; }
bool operator==(const A and b) const { return a == b.a; }
};
bool compare(const A and a, const A and b) { return a == b; }
int main () {
int t[] = {1,2,3,3,5,1,2,4,4,5};
vector v (t,t+10);
vector::iterator it = v.begin();
while ( (it = adjacent_find (it, v.end(), compare)) != v.end()) {
cout< } cout<< endl; return 0; }
B. program outputs: 2 7
C. program outputs: 3 8
D. compilation error
E. program will run forever
What happens when you attempt to compile and run the following code?
#include
#include
#include
#include
using namespace std;
template
ostream and out;
Out(ostream and o): out(o){}
void operator() (const T and val ) { out< }; bool Compare(char a, char b) { return tolower(a) < tolower(b);} int main() { char s[]={"qwerty"}; char t1[]={"ert"}; char t2[]={"ERT"}; sort(s, s+6); cout< return 0; } Program outputs:
B. 0 1
C. 1 0
D. 1 1
What happens when you attempt to compile and run the following code?
#include
#include
#include
#include
using namespace std;
template
ostream and out;
Out(ostream and o): out(o){}
void operator() (const T and val ) { out< template T start; T step; Sequence(T start, T step):start(start), step(step){} T operator()() { T v = start; start+=step; return v; } }; bool Less(float a, float b) { return int(a) int main() { float t[]={2.28, 1.66, 1.32, 3.94, 3.64, 2.3, 2.98, 1.96, 2.62, 1.13}; vector stable_sort(v1.begin(), v1.end(), Less); for_each(v1.begin(), v1.end(), Out return 0; } Program outputs:
B. 1.13 1.32 1.66 1.96 2.28 2.3 2.62 2.98 3.64 3.94
C. compilation error
D. 3.94 3.64 2.98 2.62 2.3 2.28 1.96 1.66 1.32 1.13
E. the exact output is impossible to determine
What happens when you attempt to compile and run the following code?
#include
#include
using namespace std;
class A
{
int a,b;
public:
A and operator =(const A and c) { a = c.a; return *this;}
A():a(0),b(0){}
void setA(int a) {this?>a = a;} void setB(int b) {this?>b = b;}
int getA() {return a;} int getB() {return b;}
};
int main ()
{
vectorv;
A a;
a.setA(10); a.setB(11);
v.push_back(a);
A b = v.front(); v.pop_back();
cout< return 0; }
B. compilation error
C. program outputs 0 10
D. program outputs 10 0
E. program outputs 11 0
What happens when you attempt to compile and run the following code? Choose all that apply.
#include
#include
#include
#include
#include
#include
using namespace std;
template
ostream and out;
Out(ostream and o): out(o){}
void operator() (const T and val ) {out< int main () { int t[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; fstream f("test.out", ios::trunc|ios::out); list for_each(l.begin(), l.end(), Out f.close(); f.open("test.out"); for( ; f.good() ; ) { int i; f>>i; cout< } f.close(); return 0; }
B. file test.out will be truncated
C. file test.out will be opened for reading
D. no file will be created nor opened
E. program will display sequence 1 2 3 4 5 6 7 8 9 10
What happens when you attempt to compile and run the following code?
#include
#include
#include
#include
#include
using namespace std;
template
public:
B(T v):val(v){}
T getV() const {return val;} };
template template ostream and out; Out(ostream and o): out(o){} void operator() (const T and val ) { out< string tolower(const string and s) { string tmp(s); for(unsigned i = 0; i< tmp.size(); ++i){ tmp[i] = tolower(tmp[i]); } return tmp; } bool Less(const B int main() { string t[]={"aaa","bbb","Aaa", "Bbb","aAa","bBb","aaA","bbB"}; vector stable_sort(v1.begin(), v1.end(), Less); for_each(v1.begin(), v1.end(), Out return 0; } Program outputs:
B. Aaa aaa aAa aaA bbb Bbb bbB bBb
C. aaa Aaa aAa aaA bbb Bbb bBb bbB
D. the exact output is impossible to determine
What happens when you attempt to compile and run the following code? #include
#include
#include
using namespace std;
template
ostream and out;
Out(ostream and o): out(o){}
void operator()(const T and val ) { out< }; struct Sequence { int start; Sequence(int start):start(start){} int operator()() { return start++; } }; struct Odd { bool operator()(int v) { return v%2==0; } }; int main() { vector vector generate(v1.begin(), v1.end(), Sequence(1)); stable_partition(v1.begin(),v1.end(), Odd()); for_each(v1.begin(), v1.end(), Out return 0; } Program outputs:
B. 5 7 3 9 1 10 2 8 4 6
C. 10 2 8 4 6 5 7 3 9 1
D. 4 6 8 10 2 7 5 3 1 9
E. 2 4 6 8 10 1 3 5 7 9
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