What will be the output of the following C++ code?
#include <string>
#include <iostream>
using namespace std;
void string_permutation( string& orig, string& perm )
{
if (orig.empty())
{
cout<<perm<<endl;
return;
}
for (int i = 0; i < orig.size(); ++i)
{
string orig2 = orig;
orig2.erase(i, 1);
string perm2 = perm;
perm2 += orig.at(i);
string_permutation(orig2, perm2);
}
}
int main()
{
string orig = "ter";
string perm;
string_permutation(orig, perm);
return 0;
}
#include <string>
#include <iostream>
using namespace std;
void string_permutation( string& orig, string& perm )
{
if (orig.empty())
{
cout<<perm<<endl;
return;
}
for (int i = 0; i < orig.size(); ++i)
{
string orig2 = orig;
orig2.erase(i, 1);
string perm2 = perm;
perm2 += orig.at(i);
string_permutation(orig2, perm2);
}
}
int main()
{
string orig = "ter";
string perm;
string_permutation(orig, perm);
return 0;
}A. ter
B. ert
C. ret
D. returns all the combination of ter
Answer: Option D
This Question Belongs to C Plus Plus Programming >> C Plus Plus Miscellaneous
What does the 'sizeof' operator return in C++?
A. Size of a data type in bits
B. Size of a data type in bytes
C. Size of a variable in bytes
D. Size of a variable in bits
What is the purpose of the 'static' keyword in C++?
A. To declare a variable with dynamic storage duration
B. To declare a constant
C. To declare a variable with external linkage
D. To declare a variable with static storage duration
What is the difference between '++i' and 'i++' in C++?
A. None of the above
B. They both have the same effect
C. '++i' increments the value of 'i' before returning it, while 'i++' increments the value of 'i' after returning it
D. '++i' increments the value of 'i' after returning it, while 'i++' increments the value of 'i' before returning it
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