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Standard Template Library (STL) in C++
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
109
Questions
4/6
Page
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#include <iostream>
#include <exception>
using namespace std;
class myexc: public exception
{
virtual const char* what() const throw()
{
return "My exception";
}
} myex;
int main ()
{
try
{
throw myex;
}
catch (exception& e)
{
cout << e.what() << endl;
}
return 0;
}Select an option to see the answer and solution.
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#include <stdio.h>
#include <math.h>
int main ()
{
printf ("The value of -3.1416 is %lf\n", fabs (-3.1416));
return 0;
}Select an option to see the answer and solution.
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#include <iostream>
#include <exception>
using namespace std;
int main ()
{
try
{
int* myarray= new int[1000];
cout << "Allocated";
}
catch (exception& e)
{
cout << "Standard exception: " << e.what() << endl;
}
return 0;
}Select an option to see the answer and solution.
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#include <stdio.h>
#include <stdlib.h>
int compareints (const void * a, const void * b)
{
return ( *(int*)a - *(int*)b );
}
int values[] = { 50, 20, 60, 40, 10, 30 };
int main ()
{
int * p;
int key = 40;
qsort(values, 6, sizeof (int), compareints);
p = (int*) bsearch (&key, values, 6, sizeof (int), compareints);
if (p != NULL)
printf ("%d\n",*p);
return 0;
}Select an option to see the answer and solution.
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