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 struct Compare { bool operator ()(A and a) { if (a.getA() < 5) return true; return false; } }; int main () { int t[] = {1,2,3,2,3,5,1,2,7,3,2,1,10, 4,4,5}; set d (t,t+15); int number = count_if(d.begin(), d.end(), Compare()); cout<< number< return 0; } Program outputs:
B. 4
C. 2
E. compilation error
What happens when you attempt to compile and run the following code? #include
#include
using namespace std;
int main ()
{
float f = 10.126;
cout.unsetf(ios::floatfield);
cout< return 0; } Program outputs:
B. 10.126 10.12
C. 10.1260 10.13
D. 10.126 10.13
Which pieces of code inserted independently into places marked 1 and 2 will cause the program to compile and display: 0 1 2 3 4 5 6 7 8 9? Choose all that apply.
#include
#include
using namespace std;
class A { int a; public:
A(int a){ this?>a=a;}
//insert code here 1
};
//insert code here 2
template
while (start != end) {
std::cout << *start << " "; start++;
}
}
int main() {
A t1[] ={ 1, 7, 8, 4, 5 };list l1(t1, t1 + 5);
A t2[] ={ 3, 2, 6, 9, 0 };list l2(t2, t2 + 5);
l1.sort();l2.sort();l1.merge(l2);
print(l1.begin(), l1.end());
print(l2.begin(), l2.end()); cout< return 0; }
B. place 1: operator int() { return a; } bool operator < (const A and b) { return this?>a< b.a;}
C. place 1: bool operator < (const A and b) { return this?>a< b.a;}
D. place 1: bool operator < (const A and b) { return this?>a< b.a;} friend ostream and operator
E. place 1: bool operator < (const A and b) { return this?>a< b.a;} place 2: ostream and operator
What will happen when you attempt to compile and run the code below, assuming that you enter the following sequence: one two three
#include
#include
using namespace std;
int main ()
{
string a;
getline(cin, a);
cout< return 0; } Program will output:
B. one two three
C. runtime exception
D. compilation error
E. the result is unspecified
What happens when you attempt to compile and run the following code?
#include
#include
#include
using namespace std;
int main () {
int t[] = {1,2,3,4,5,1,2,3,5,4};
vector
vector
int m1[] = {1, 3, 2};
it = find_end (v.begin(), v.end(), m1, m1+3);
if (it != v.end())
cout << "Found at position: " << it?v.begin() << endl;
return 0;
}
A. program outputs: Found at position: 5What happens when you attempt to compile and run the following code? Choose all that apply.
#include
#include
#include
#include
#include
#include
using namespace std;
class B { int val;
public:
B(int v=0):val(v){}
int getV() const {return val;}
operator int() const { return val; };};
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 l(t, t+10); for_each(l.begin(), l.end(), Out(f)); 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
using namespace std;
int main() {
int t[] = { 10, 5, 9, 6, 2, 4, 7, 8, 3, 1 };
map
for(int i=0; i < 10; i++) {
m[i]=t[i];
}
map
cout<
return 0;
}
Program outputs:
A. 5What happens when you attempt to compile and run the following code?
#include
#include
#include
using namespace std;
class B { int val;
public:
B(int v):val(v){}
int getV() const {return val;} bool operator < (const B and v) const { return val ostream and operator <<(ostream and out, const B and v) { out< template ostream and out; Out(ostream and o): out(o){} void operator() (const T and val ) { out< int main() { B t1[]={3,2,4,1,5}; int t2[]={5,6,8,2,1}; vector v1(10,0); sort(t1, t1+5); sort(t2, t2+5); set_union(t1,t1+5,t2,t2+5,v1.begin()); for_each(v1.begin(), v1.end(), Out(cout));cout< return 0; } Program outputs:
B. 1 2 3 4 5 6 8 2 1 0
C. 1 1 2 2 3 4 5 5 6 8
D. 1 2 3 4 5 6 8 0 0 0
E. compilation error
What will happen when you attempt to compile and run the following code?
#include
#include
#include
using namespace std;
int main(){
int t[] ={ 3, 4, 2, 1, 6, 5, 7, 9, 8, 0 };
vector
set
s1.insert(v.begin(),v.end());
pair
range = s1.equal_range(6);
cout<<*range.first<<" "<<*range.second< return 0; } The output will be:
B. 5 7
C. 6 7
D. 1 5
E. 6 5
What happens when you attempt to compile and run the following code?
#include
#include
using namespace std;
int main ()
{
float f = 10.126;
cout< return 0; } Program outputs:
B. 10.126 10.12
C. compilation error D. 10.126 10.13
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