Finish Lab 3

5 files changed, 86 insertions, 9 deletions

diff --git a/ee1301/wk3/lab3/RootBabylon2.cpp b/ee1301/wk3/lab3/RootBabylon2.cpp
new file mode 100644
index 0000000..c6daa37
--- /dev/null
+++ b/ee1301/wk3/lab3/RootBabylon2.cpp
@@ -0,0 +1,40 @@
+#include <iostream>
+#include <iomanip>
+#include <cmath>
+using namespace std;
+
+double gennewGuess(double n, double old_guess) {
+  double real, old;
+  real=sqrt(n);
+  double new_guess = ( old_guess + n / old_guess ) / 2;
+  old=new_guess;
+  if (((new_guess-real)/real)>0.01) { //This will be true if the difference between the real root and guess is more than 1%.
+  //  cout << old << endl;
+    return gennewGuess(n, old);
+  } else {
+  //  cout << old << endl;
+    return new_guess;
+  }
+}
+int main () {
+  double temp;
+  char cont;
+  do {
+  cout << "enter a value: ";
+  cin >> temp;
+  int n=temp;
+  if (temp<=0) {
+    cout << "Please enter a valid input(Positive Integer)." << endl;
+    return sqrt(-1);
+  }
+  //cout << "Guessing..." << endl;
+  temp = gennewGuess(temp, 1.0);
+  cout << fixed << setprecision(0) << "square root of " << n << " is " << temp << endl
+  << "continue? (y/n): ";
+  cin >> cont;
+  if (cont!='n'&&cont!='y') {
+    return -1;
+  }
+} while (cont!='n');
+  // << "Actual Value: " << real << endl;
+}
diff --git a/ee1301/wk3/lab3/RtBab.cpp b/ee1301/wk3/lab3/RootBabylonOG.cpp
index d75bd9e..07c1951 100644
--- a/ee1301/wk3/lab3/RtBab.cpp
+++ b/ee1301/wk3/lab3/RootBabylonOG.cpp
@@ -3,15 +3,11 @@
 using namespace std;
 
 double gennewGuess(double n, double old_guess) {
-  bool WA=true;
   double real, old;
-  //if (WA) {
-    real=sqrt(n);
-    WA=false;
-  //}
+  real=sqrt(n);
   double new_guess = ( old_guess + n / old_guess ) / 2;
   old=new_guess;
-  if (((new_guess-real)/real)>0.01) {
+  if (((new_guess-real)/real)>0.01) { //This will be true if the difference between the real root and guess is more than 1%.
     cout << old << endl;
     return gennewGuess(n, old);
   } else {
@@ -25,7 +21,7 @@ int main () {
   cin >> temp;
   if (temp<=0) {
     cout << "Please enter a valid input(Positive Integer)." << endl;
-    return -1;
+    return sqrt(-1);
   }
   cout << "Guessing..." << endl;
   double real=sqrt(temp);
diff --git a/ee1301/wk3/lab3/fib.cpp b/ee1301/wk3/lab3/fib.cpp
index 7508637..cd3a048 100644
--- a/ee1301/wk3/lab3/fib.cpp
+++ b/ee1301/wk3/lab3/fib.cpp
@@ -14,4 +14,4 @@ int main()
       cout << endl;
   }
   cout << endl;
-}
\ No newline at end of file
+}
diff --git a/ee1301/wk3/lab3/mysteryBox.cpp b/ee1301/wk3/lab3/mysteryBox.cpp
index c1a85a4..c409b7c 100644
--- a/ee1301/wk3/lab3/mysteryBox.cpp
+++ b/ee1301/wk3/lab3/mysteryBox.cpp
@@ -9,4 +9,4 @@ int main () {
           sum++;
   }
 cout << sum;
-}
\ No newline at end of file
+}
diff --git a/ee1301/wk3/lab3/strap012_lab3_decimal_roman_conv.cpp b/ee1301/wk3/lab3/strap012_lab3_decimal_roman_conv.cpp
new file mode 100644
index 0000000..6dbd3bc
--- /dev/null
+++ b/ee1301/wk3/lab3/strap012_lab3_decimal_roman_conv.cpp
@@ -0,0 +1,41 @@
+#include <iostream>
+#include <string>
+using namespace std;
+int main () {
+  int decimal;
+  cout << "Enter an integer value from 1 to 999: ";
+  cin >> decimal;
+  if (decimal<1||decimal>999) {
+    cout << "       Invalid Input.    Program terminated." << endl;
+    return 1453;
+  } else {
+      cout << "Roman numeral equivalent: ";
+  while (decimal!=0) {
+    if (decimal>900 && decimal<1000) {
+      cout << "CM"; decimal-=900; }
+    if (decimal>500 && decimal<900) {
+      cout << "D"; decimal-=500; }
+    if (decimal>400 && decimal<500) {
+      cout << "CD"; decimal-=400; }
+    if (decimal>100 && decimal<400) {
+      cout << "C"; decimal-=100; }
+    if (decimal>90 && decimal<100) {
+      cout << "XC"; decimal-=90; }
+    if (decimal>50 && decimal<90) {
+      cout << "L"; decimal-=50; }
+    if (decimal>40 && decimal<50) {
+      cout << "XL"; decimal-=40; }
+    if (decimal>10 && decimal<40) {
+      cout << "X"; decimal-=10; }
+    if (decimal==9) {
+      cout << "IX"; decimal-=9; }
+    if (decimal>5 && decimal<9) {
+    cout << "V"; decimal-=5; }
+    if (decimal==4) {
+    cout << "IV"; decimal-=4; }
+    if (decimal>=1 && decimal<4) {
+    cout << "I"; decimal-= 1; }
+  }}
+  cout << endl;
+  return 0;
+}