/**************************************************************
* * This main function creates a vector of randomly generated integers
* * for use in testing the implementations of Algorithms 1-4. The first part measures
* * the running time in ms for each Algorithm for display. The second part tests
* * input output by reading input from a specified text file, running each Algorithm
* * on this input, and writing the results to another specified text file.
* ***************************************************************/
int main(int argc, char* argv[]){
std::string filename;
std::string outputfilename;
/* The first argument (argc) is the number of elements in the array so we should have two elements the program name and file name
Credit: http://www.site.uottawa.ca/~lucia/courses/2131-05/labs/Lab3/CommandLineArguments.html
*/
if(argc != 2)
{
std::cout << "Please enter an input filename." << std::endl << std::endl;
exit(1);
}
/* which is the second argument (argv). The second argument is always an array of char*, */
else
{
filename = std::string(argv[1]);
std::string tempoutputfilename = std::string(argv[1]);
//http://www.cplusplus.com/reference/string/string/length/
int strsize = tempoutputfilename.length() - 4;
/* http://www.cplusplus.com/reference/string/string/operator+/
http://www.cplusplus.com/reference/string/string/substr/ */
outputfilename = (tempoutputfilename.substr(0, strsize)) + "change.txt";
std::cout << outputfilename << std::endl;
}
//cout << filename << endl;
/* Stream class provided by C++ to read from files
Credit: http://www.cplusplus.com/doc/tutorial/files/*/
std::ifstream textfile;
/* In order to open a file with a stream object we use its member function open */
textfile.open(filename);
/* To check if a file stream was successful opening a file, you can do it by calling to member is_open
Credit: http://www.cplusplus.com/doc/tutorial/files/*/
if(!textfile.is_open())
{
std::cout << "The file could not be opened." << std::endl;
textfile.close();
exit(1);
}
/* Call function to put first alternating lines as the coin set input and the second alternating lines as total change V */
std::vector<std::vector<int>> coinsetinput;
std::vector<int> changevalueV;
getinput( textfile, coinsetinput, changevalueV );
textfile.close();
/* Stream class to write on files
Credit: http://www.cplusplus.com/doc/tutorial/files/*/
std::ofstream textfile2;
textfile2.open(outputfilename);
if(!textfile2.is_open())
{
std::cout << "Cannot open for writing. Check the permissions of the directory." << std::endl;
textfile2.close();
exit(1);
}
/* Display a babel for brute force algorithm time trial */
std::cout << "Testing changeslow...." << std::endl;
for( unsigned int i = 0; i < coinsetinput.size(); i++ )
{
/* Run brute force algorithm on input numbers from first to last element */
std::vector<int> coinCount;
runtimetrial( changeslow, coinsetinput.at(i), changevalueV.at(i), coinCount );
}
/* Display a babel for greedy algorithm time trial */
std::cout << "Testing changegreedy...." << std::endl;
for( unsigned int i = 0; i < coinsetinput.size(); i++ )
{
/* Run greedy algorithm on input numbers from first to last element */
std::vector<int> coinCount;
runtimetrial( changegreedy, coinsetinput.at(i), changevalueV.at(i), coinCount);
}
/* Display a babel for dynamic programming algorithm time trial */
std::cout << "Testing changedp...." << std::endl;
/*for( unsigned int i = 0; i < coinsetinput.size(); i++ )
{
Run greedy algorithm on input numbers from first to last element
}*/
/* Call function to output is to be written to text file */
textfile2 << "Brute Force \n\n";
/* Run changeslow algorithm on input numbers */
for( unsigned int i = 0; i < coinsetinput.size(); i++ )
{
std::vector<int> coinCount;
int minCoins = changeslow( coinsetinput.at(i), changevalueV.at(i), coinCount );
writeResults( textfile2, coinCount, minCoins );
}
/* Call function to output is to be written to text file */
textfile2 << "Greedy\n\n";
for( unsigned int i = 0; i < coinsetinput.size(); i++ )
{
std::vector<int> coinCount;
int minCoins = changegreedy(coinsetinput.at(i), changevalueV.at(i), coinCount);
writeResults( textfile2, coinCount, minCoins );
}
/* Call function to output is to be written to text file */
textfile2 << "Dynamic Programming\n\n";
//for( unsigned int i = 0; i < coinsetinput.size(); i++ )
// {
// std::vector<int> coinCount;
// int minCoins = changedp();
//writeResults( textfile2, coinCount, minCoins );
//}
textfile2.close();
}
int main(){
FILE *fp, *fp2;
char discard;
char str[100]; //assume each line has less than 100 characters
int number_lines;
int i, j;
int *V = malloc(100 * sizeof(int)); //assume each line has less than 100 numbers
int *C = malloc(100 * sizeof(int)); //assume each line has less than 100 numbers
int A;
int size;
int minimum;
fp = fopen ("Coin.txt", "r");
for (i = 0; i < 100; i++){
if (feof(fp)) //end of file
break;
fgets(str, 100, fp);
}
number_lines = i;
rewind(fp);
fp2 = fopen ("Coinchange.txt", "w");
for (i = 0; i < number_lines / 2; i++){
discard = fgetc(fp); //discard [
for (j = 0; j < 100; j++){
fscanf(fp, "%d%c ", &V[j], &discard);
if (discard != ',') //end of line
break;
}
size = j + 1;
fscanf(fp, "%d", &A);
discard = fgetc(fp); //discard newline character
//start changeslow
int* array = malloc(100 * sizeof(int));
array = changeslow(V, size, A);
int summ = 0;
for (j = 0; j < size; j++){
//printf("%d ", array[j]);
summ += array[j];
}
fprintf(fp2, "[");
for (j = 0; j < size - 1; j++){
fprintf(fp2, "%d, ", array[j]);
}
fprintf(fp2, "%d]\n", array[size - 1]);
fprintf(fp2, "%d\n", summ);
//end changeslow
//start changechangegreedy
for (j = 0; j < 100; j++){
C[j] = 0; //initiate to zero
}
minimum = changegreedy(V, C, size, A);
fprintf(fp2, "[");
for (j = 0; j < size - 1; j++){
fprintf(fp2, "%d, ", C[j]);
}
fprintf(fp2, "%d]\n", C[size - 1]);
fprintf(fp2, "%d\n", minimum);
//end changechangegreedy
//start changedp
for (j = 0; j < 100; j++){
C[j] = 0; //initiate to zero
}
minimum = changedp(V, C, size, A);
fprintf(fp2, "[");
for (j = 0; j < size - 1; j++){
fprintf(fp2, "%d, ", C[j]);
}
fprintf(fp2, "%d]\n", C[size - 1]);
fprintf(fp2, "%d\n", minimum);
//end changedp
fprintf(fp2, "\n");
}
fclose(fp);
fclose(fp2);
printf("See Coinchange.txt for results.\n");
return 0;
}