C / C++ Code Portfolio

unsigned int intTest = 1;
int numBitsCounter;
// perform left bit shift on the unsigned int. when the unsigned int is equal to 0, we are done
// increment the bit counter for each left bit shift performed on the unsigned int
for (numBitsCounter = 1; intTest <<= 1; ++numBitsCounter)
;
// return the bit counter value
return numBitsCounter;
}
// This function performs a "count"-length bitwise circular shift on unsigned object "object"

int CountIntBitsF();

unsigned Rotate(unsigned object, int count)
{
// if count is negative, perform a left circular shift
if (count <= 0)
{
// left shift object count bits
unsigned firstShift = object << -count % CountIntBitsF();
// right shift object count bits less than the number of bits in an unsigned
unsigned secondShift = object >> (CountIntBitsF() - (-count % CountIntBitsF()));
// bitwise-ORing the left and right shifts gives the final left circular shift
return(firstShift | secondShift);
}
// if count is positive, perform a right circular shift
else
{
// right shift object count bits
unsigned firstShift = object >> count % CountIntBitsF();
// left shift object count bits less than the number of bits in an unsigned
unsigned secondShift = object << (CountIntBitsF() - (count % CountIntBitsF()));
// bitwise-ORing the left and right shifts gives the final right circular shift
return(firstShift | secondShift);
}
}
File Handling
// This function opens count files specified by fileNames

#include

#include
#include

using namespace std;

ifstream *OpenFiles(char * const fileNames[], size_t count)

{
// if the number of files specified by count is zero, output an error message and exit