======
ANSWER
======
The first one is faster. Run this program:
#include <iostream>
class Int
{
public:
Int()
{
Int::constuction ++;
}
Int(int i)
{
Int::constuction ++;
*this = i;
}
~Int()
{
Int::destruction ++;
}
Int& operator ++(int)
{
this->val++;
this->increments ++;
return *this;
}
Int& operator =(int left)
{
this->val = left;
this->eq ++;
return *this;
}
bool operator < (int left)
{
Int::comparisons ++;
return this->val < left;
}
private: int val;
public: static int comparisons;
static int increments;
static int constuction;
static int destruction;
static int eq;
};
int Int::comparisons = 0;
int Int::increments = 0;
int Int::constuction = 0;
int Int::destruction = 0;
int Int::eq = 0;
void main()
{
{
for(Int i=0; i<50; i++)
for( Int j=0; j<100; j++)
;
}
std::cout << "comparisons = " << Int::comparisons << std::endl;
std::cout << "increments = " << Int::increments << std::endl;
std::cout << "constuction = " << Int::constuction << std::endl;
std::cout << "destruction = " << Int::destruction << std::endl;
std::cout << "eq = " << Int::eq << std::endl;
std::cout << "==========================\n\n";
Int::comparisons = 0;
Int::increments = 0;
Int::constuction = 0;
Int::destruction = 0;
Int::eq = 0;
{
for(Int i=0; i<100; i++)
for( Int j=0; j<50; j++)
;
}
std::cout << "comparisons = " << Int::comparisons << std::endl;
std::cout << "increments = " << Int::increments << std::endl;
std::cout << "constuction = " << Int::constuction << std::endl;
std::cout << "destruction = " << Int::destruction << std::endl;
std::cout << "eq = " << Int::eq << std::endl;
}
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