adding cs142 code

cs142/smcquay/lab04/Makefile

@@ -0,0 +1,16 @@
+CPPFLAGS=-Wall -g -std=c++0x
+
+all: magic test00 test01
+
+magic: magic.cc num_set.o converts.o
+
+test00: test00.cc num_set.o converts.o
+test01: test01.cc num_set.o converts.o
+
+num_set.o: num_set.cc num_set.h
+converts.o: converts.cc converts.h
+
+clean:
+	@rm -rfv test00 test00.dSYM
+	@rm -rfv test01 test01.dSYM
+	@rm -rvf magic magic.dSYM *.o

cs142/smcquay/lab04/converts.cc

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+#include <iostream>
+#include <cmath>
+
+#include "converts.h"
+
+int str2int(string s) {
+    int r = 0;
+    int i = 0;
+    for(auto s_it = s.rbegin(); s_it != s.rend(); s_it++) {
+        if (*s_it == '1') {
+            r += pow(2, i);
+        }
+
+        i++;
+    }
+    return r;
+}

cs142/smcquay/lab04/converts.h

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+#ifndef __CONVERTS_H__
+#define __CONVERTS_H__
+
+#include <string>
+
+using namespace std;
+
+int str2int(string i);
+
+#endif

cs142/smcquay/lab04/magic.cc

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+#include <iostream>
+#include <vector>
+#include <algorithm>
+#include <ctime>
+#include "num_set.h"
+
+using namespace std;
+
+const string usage = "usage: magic ";
+
+int main(int argc, char * argv[]) {
+    string play_again;
+    srand(time(NULL));
+    while (true) {
+        string cur_guess_str;
+        for(int i=0; i < 5; i++) {
+            int compliment = rand() % 2;
+            vector<string> nums = generate_numbers(i, compliment);
+            cout << nums << endl << endl;
+            string cur_guess;
+            cout << "is your number in there: ";
+            cin >> cur_guess;
+            if(cur_guess[0] == 'y' or cur_guess[0] == 'Y') {
+                if(compliment == 0) 
+                    cur_guess_str.push_back('0');
+                else
+                    cur_guess_str.push_back('1');
+            } else {
+                if(compliment == 0) 
+                    cur_guess_str.push_back('1');
+                else
+                    cur_guess_str.push_back('0');
+            }
+        }
+        reverse(cur_guess_str.begin(), cur_guess_str.end());
+        cout << cur_guess_str << ", " << str2int(cur_guess_str) << endl;
+        cout << "play again? ";
+        cin >> play_again;
+
+        if(!(play_again[0] == 'y' or play_again[0] == 'Y'))
+            break;
+    }
+    cout << "good bye" << endl;
+    return 0;
+}

cs142/smcquay/lab04/num_set.cc

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+#include <iostream>
+#include <sstream>
+#include <iomanip>
+
+#include "num_set.h"
+
+vector<string> zerone = {"0", "1"};
+
+vector<string> generate_numbers(int constant_index, int compliment) {
+    vector<string> r;
+    stringstream out;
+    out << compliment;
+    auto compliment_str = out.str();
+    for(int i=0; i <= 1; i++) {
+        for(int j=0; j <= 1; j++) {
+            for(int k=0; k <= 1; k++) {
+                for(int l=0; l <= 1; l++) {
+                    ostringstream cur_str;
+                    cur_str << i << j << k << l;
+                    string s = cur_str.str();
+                    s.insert(s.size() - constant_index, compliment_str);
+                    r.push_back(s);
+                }
+            }
+        }
+    }
+    return r;
+}
+
+ostream & operator<<(ostream & os, const vector<string> & nums) {
+    for (unsigned int i = 0; i < nums.size(); i++) {
+        os << setw(4) << str2int(nums[i]);
+        if(i % 4 == 3 and i != nums.size() - 1) {
+            os << endl;
+        }
+    }
+    return os;
+}

cs142/smcquay/lab04/num_set.h

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+#ifndef __NUM_SET_H__
+#define __NUM_SET_H__
+
+#include <vector>
+#include <string>
+#include <ostream>
+
+#include "converts.h"
+
+using namespace std;
+
+vector<string> generate_numbers(int, int);
+ostream & operator<<(ostream &, const vector<string> &);
+
+#endif

cs142/smcquay/lab04/test00.cc

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+#include <iostream>
+#include <sstream>
+#include <vector>
+#include "num_set.h"
+
+using namespace std;
+
+const string usage = "usage: test <index> <0/1>";
+
+int main(int argc, char * argv[]) {
+    if (argc < 3) {
+        cerr << usage << endl;
+        return 1;
+    }
+    int index, compliment;
+    istringstream iss0(argv[1]);
+    iss0 >> index;
+    index = index % 5;
+    istringstream iss1(argv[2]);
+    iss1 >> compliment;
+    compliment = compliment % 2;
+
+    vector<string> nums = generate_numbers(index, compliment);
+
+    for(string i: nums)
+        cout << i << endl;
+
+    return 0;
+}

cs142/smcquay/lab04/test01.cc

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+#include <iostream>
+#include <vector>
+#include "num_set.h"
+#include "converts.h"
+
+using namespace std;
+
+const string usage = "usage: test <index> <0/1>";
+
+int main() {
+    vector<string> nums = generate_numbers(0, 0);
+
+    cout << "should print evens:" << endl;
+    for(string n: nums) {
+        int i = str2int(n);
+        cout << ">>> " << n << ", " << i << endl;
+    }
+
+    return 0;
+}