Day 4 ANSI C++

.gitignore

@@ -44,3 +44,14 @@ cpp/ANSI/W1/Day3/3.7/printchars2
 cpp/ANSI/W1/Day3/3.8/enumeratedconstants
 cpp/ANSI/W1/Day3/3.9/enumeratedconstants2
 cpp/ANSI/W1/Day3/Ex.SpecialChars/specialchars
+cpp/ANSI/W1/Day4/4.1/complexexpressions
+cpp/ANSI/W1/Day4/4.2/integerOverflow
+cpp/ANSI/W1/Day4/4.3/prefixPostfixOperators
+cpp/ANSI/W1/Day4/4.4/nestedif
+cpp/ANSI/W1/Day4/4.5/elseif
+cpp/ANSI/W1/Day4/4.6/complexnestedif
+cpp/ANSI/W1/Day4/4.7/brokenbracesif
+cpp/ANSI/W1/Day4/4.8/fixedbracesif
+cpp/ANSI/W1/Day4/Quiz/quiz
+cpp/ANSI/W1/Day4/Ex.LogicalOperators/logicaloperators
+cpp/ANSI/W1/Day4/4.9/conditionaloperator

cpp/ANSI/W1/Day4/4.1/Makefile

@@ -0,0 +1,13 @@
+CFLAGS = -std=c++03 -O2
+LDFLAGS = -lglfw -lvulkan -ldl -lpthread -lX11 -lXxf86vm -lXrandr -lXi
+
+1.1: main.cpp
+	c++ $(CFLAGS) -o complexexpressions main.cpp $(LDFLAGS)
+
+.PHONY: test clean
+
+test: complexexpressions
+	./complexexpressions
+
+clean:
+	rm -f complexexpressions

cpp/ANSI/W1/Day4/4.1/main.cpp

@@ -0,0 +1,17 @@
+// Demonstrating how to use Complex Expressions
+#include <iostream>
+
+int main()
+{
+    using namespace std;
+
+    int a=0, b=0, x=0, y=35;
+    cout << "a: " << a << " b: " << b;
+    cout <<  " x: " << x << " y: " << y << endl;
+    a = 9;
+    b = 7;
+    y = x = a+b;
+    cout << "a: " << a << " b: " << b;
+    cout << " x: " << x << " y: " << y << endl;
+    return 0;
+}

cpp/ANSI/W1/Day4/4.2/Makefile

@@ -0,0 +1,13 @@
+CFLAGS = -std=c++03 -O2
+LDFLAGS = -lglfw -lvulkan -ldl -lpthread -lX11 -lXxf86vm -lXrandr -lXi
+
+1.1: main.cpp
+	c++ $(CFLAGS) -o integerOverflow main.cpp $(LDFLAGS)
+
+.PHONY: test clean
+
+test: integerOverflow
+	./integerOverflow
+
+clean:
+	rm -f integerOverflow

cpp/ANSI/W1/Day4/4.2/main.cpp

@@ -0,0 +1,19 @@
+// Demonstration of subtraction and Interger Overflow
+#include <iostream>
+
+using namespace std;
+
+int main()
+{
+    typedef unsigned int UINT;
+    UINT difference;
+    UINT bigNumber = 100;
+    UINT smallNumber = 50;
+
+    difference = bigNumber - smallNumber;
+    cout << "Difference is: " << difference;
+
+    difference = smallNumber - bigNumber;
+    cout << "\nNow the difference is: " << difference << endl;
+    return 0;
+}

cpp/ANSI/W1/Day4/4.3/Makefile

@@ -0,0 +1,13 @@
+CFLAGS = -std=c++03 -O2
+LDFLAGS = -lglfw -lvulkan -ldl -lpthread -lX11 -lXxf86vm -lXrandr -lXi
+
+1.1: main.cpp
+	c++ $(CFLAGS) -o prefixPostfixOperators main.cpp $(LDFLAGS)
+
+.PHONY: test clean
+
+test: prefixPostfixOperators
+	./prefixPostfixOperators
+
+clean:
+	rm -f prefixPostfixOperators

cpp/ANSI/W1/Day4/4.3/main.cpp

@@ -0,0 +1,34 @@
+/* Demonstrate use of prefix and postix increment
+and decrement operators */
+#include <iostream>
+
+int main()
+{
+    using namespace std;
+
+    int myAge = 39;     // Initialize two Integers
+    int yourAge = 75;
+    
+    cout << "I am: " << myAge << " years old.\n";
+    cout <<  "You are: " << yourAge << " years old\n";
+    myAge++;        // Postfix increment
+    ++yourAge;      // prefix increment
+    
+    cout << "One year passes...\n";
+    
+    cout << "I am: " << myAge << " years old.\n";
+    cout <<  "You are: " << yourAge << " years old\n";
+    myAge++;        // Postfix increment
+    ++yourAge;      // prefix increment
+
+    cout << "Another year passes...\n";
+
+    cout << "I am: " << myAge << " years old.\n";
+    cout <<  "You are: " << yourAge << " years old\n";
+
+    cout << "Let's print it again.\n";
+    cout << "I am: " << myAge << " years old.\n";
+    cout <<  "You are: " << yourAge << " years old\n";
+    return 0;
+
+}

cpp/ANSI/W1/Day4/4.4/Makefile

@@ -0,0 +1,13 @@
+CFLAGS = -std=c++03 -O2
+LDFLAGS = -lglfw -lvulkan -ldl -lpthread -lX11 -lXxf86vm -lXrandr -lXi
+
+1.1: main.cpp
+	c++ $(CFLAGS) -o nestedif main.cpp $(LDFLAGS)
+
+.PHONY: test clean
+
+test: nestedif
+	./nestedif
+
+clean:
+	rm -f nestedif

cpp/ANSI/W1/Day4/4.4/main.cpp

@@ -0,0 +1,41 @@
+/* Demonstrate use of if statement
+used with relational operators */
+
+#include <iostream>
+
+int main()
+{
+    using namespace std;
+
+    int metsScore, yankeesScore;
+    cout << "Enter the score for the Mets: ";
+    cin >> metsScore;
+
+    cout<< "\nEnter the score of the Yankees: ";
+    cin >> yankeesScore;
+
+    cout << endl;
+
+    if (metsScore > yankeesScore)
+        cout << "Let's Go Mets!\n";
+
+    if (metsScore < yankeesScore)
+    {
+        cout << "Go Yankees!\n";
+    }
+    if (metsScore == yankeesScore)
+    {
+        cout << "A tie? Naah, Can't be.\n";
+        cout << "Give me the real score for the Yanks: ";
+        cin >> yankeesScore;
+
+        if (metsScore > yankeesScore)
+            cout << "Knew it! Let's go Mets!\n";
+        if (metsScore > yankeesScore)
+            cout << "Wow, go Yanks!\n";
+        if (metsScore == yankeesScore)
+           cout << "Wow, it really was a tie!\n";
+    }
+    cout << "\n Thanks for telling me.\n";
+    return 0;
+}

cpp/ANSI/W1/Day4/4.5/Makefile

@@ -0,0 +1,13 @@
+CFLAGS = -std=c++03 -O2
+LDFLAGS = -lglfw -lvulkan -ldl -lpthread -lX11 -lXxf86vm -lXrandr -lXi
+
+1.1: main.cpp
+	c++ $(CFLAGS) -o elseif main.cpp $(LDFLAGS)
+
+.PHONY: test clean
+
+test: elseif
+	./elseif
+
+clean:
+	rm -f elseif

cpp/ANSI/W1/Day4/4.5/main.cpp

@@ -0,0 +1,21 @@
+/* Demonstrates the use of the else clause
+while using the if condition */
+
+#include <iostream>
+
+int main()
+{
+    using namespace std;
+
+    int firstNumber, secondNumber;
+    cout << "Please enter a big number: ";
+    cin >> firstNumber;
+    cout << "\nPlease enter a smaller number: ";
+    cin >> secondNumber;
+    if (firstNumber > secondNumber)
+        cout << "\nThanks!\n";
+    else
+        cout << "\nWow, you should go back to first grade.\n";
+
+    return 0;
+}

cpp/ANSI/W1/Day4/4.6/Makefile

@@ -0,0 +1,13 @@
+CFLAGS = -std=c++03 -O2
+LDFLAGS = -lglfw -lvulkan -ldl -lpthread -lX11 -lXxf86vm -lXrandr -lXi
+
+1.1: main.cpp
+	c++ $(CFLAGS) -o complexnestedif main.cpp $(LDFLAGS)
+
+.PHONY: test clean
+
+test: complexnestedif
+	./complexnestedif
+
+clean:
+	rm -f complexnestedif

cpp/ANSI/W1/Day4/4.6/main.cpp

@@ -0,0 +1,32 @@
+// Demonstrates advanced If statements
+#include <iostream>
+
+int main()
+{
+    /*Ask for two numbers
+    Assign the numbers to bigNumber and littleNumber
+    if bigNumber is bigger than littleNumber,
+    see if they are evenly divisle
+    If they are, see if they are the same number */
+
+    using namespace std;
+
+    int firstNumber, secondNumber;
+
+    cout << "Enter two number.\nFirst: ";
+    cin >> firstNumber;
+    cout << "\nSecond: ";
+    cin >> secondNumber;
+
+    if ( firstNumber >= secondNumber)
+    {
+    if ( (firstNumber % secondNumber) == 0) //evenly divisble - no remainder
+        {
+            if (firstNumber == secondNumber)
+                cout << "They are the same!\n";
+        }
+            else
+                cout << "They are not evenly divisble!\n";
+            return 0;
+    }
+}

cpp/ANSI/W1/Day4/4.7/Makefile

@@ -0,0 +1,13 @@
+CFLAGS = -std=c++03 -O2
+LDFLAGS = -lglfw -lvulkan -ldl -lpthread -lX11 -lXxf86vm -lXrandr -lXi
+
+1.1: main.cpp
+	c++ $(CFLAGS) -o brokenbracesif main.cpp $(LDFLAGS)
+
+.PHONY: test clean
+
+test: brokenbracesif
+	./brokenbracesif
+
+clean:
+	rm -f brokenbracesif

cpp/ANSI/W1/Day4/4.7/main.cpp

@@ -0,0 +1,22 @@
+/* Demonstrates why braces are important inside
+nested if statements.  This program will exit early.
+Not at the intended else clause, but in the nested if.*/
+#include <iostream>
+
+int main()
+{
+    using namespace std;
+
+    int x; 
+    cout << "Enter a number less than 10 or greater than 100: ";
+    cin >> x;
+    cout << "\n";
+
+    if (x >= 10)
+        if (x > 100)
+            cout << "More than 100, Thanks!\n";
+    else
+        cout << "Less than 10, Thanks\n";
+
+    return 0;
+}

cpp/ANSI/W1/Day4/4.8/Makefile

@@ -0,0 +1,13 @@
+CFLAGS = -std=c++03 -O2
+LDFLAGS = -lglfw -lvulkan -ldl -lpthread -lX11 -lXxf86vm -lXrandr -lXi
+
+1.1: main.cpp
+	c++ $(CFLAGS) -o fixedbracesif main.cpp $(LDFLAGS)
+
+.PHONY: test clean
+
+test: fixedbracesif
+	./fixedbracesif
+
+clean:
+	rm -f fixedbracesif

cpp/ANSI/W1/Day4/4.8/main.cpp

@@ -0,0 +1,23 @@
+/* Demonstrates the proper way to use braces
+to seperate if statements in advanced nested
+if statements*/
+#include <iostream>
+
+int main ()
+{
+    using namespace std;
+
+    int x;
+    cout << "Enter a number less than 10 or greater than 100: ";
+    cin >> x;
+    cout << endl;
+
+    if (x >= 100)
+        {
+            if (x > 100)
+            cout << "More than 100, Thanks!\n";
+        }
+    else
+        cout << "Less than 10, Thanks!\n";
+    return 0;
+}

cpp/ANSI/W1/Day4/4.9/Makefile

@@ -0,0 +1,13 @@
+CFLAGS = -std=c++03 -O2
+LDFLAGS = -lglfw -lvulkan -ldl -lpthread -lX11 -lXxf86vm -lXrandr -lXi
+
+1.1: main.cpp
+	c++ $(CFLAGS) -o conditionaloperator main.cpp $(LDFLAGS)
+
+.PHONY: test clean
+
+test: conditionaloperator
+	./conditionaloperator
+
+clean:
+	rm -f conditionaloperator

cpp/ANSI/W1/Day4/4.9/main.cpp

@@ -0,0 +1,29 @@
+// Demonstrates the conditional operator "?"
+#include <iostream>
+
+int main()
+{
+    using namespace std;
+
+    int x, y, z;
+    cout << "Enter two numbers.\n";
+    cout << "First number: ";
+    cin >> x;
+    cout << "\nSecond number: ";
+    cin >> y;
+    cout << endl;
+
+    if (x > y)
+        z = x;
+    else
+        z = y;
+    
+    cout << "After it test, z: " << z << endl;
+    
+    /* This line is read as “If expression1 (x>y) is true, return the value of expression2; otherwise,
+return the value of expression3.” Assigned to variable "z" */
+    z = (x > y) ? x : y;
+
+    cout << "After conditional test, z: " << z << endl;
+    return 0;
+}

cpp/ANSI/W1/Day4/Ex.LogicalOperators/Makefile

@@ -0,0 +1,13 @@
+CFLAGS = -std=c++03 -O2
+LDFLAGS = -lglfw -lvulkan -ldl -lpthread -lX11 -lXxf86vm -lXrandr -lXi
+
+1.1: main.cpp
+	c++ $(CFLAGS) -o logicaloperators main.cpp $(LDFLAGS)
+
+.PHONY: test clean
+
+test: logicaloperators
+	./logicaloperators
+
+clean:
+	rm -f logicaloperators

cpp/ANSI/W1/Day4/Ex.LogicalOperators/main.cpp

@@ -0,0 +1,15 @@
+/* A list of the logical operators in C++ */
+#include <iostream>
+
+int main()
+{
+    using namespace std;
+
+    cout << "The && operator means AND . ie if ( (x == 5) && (y == 5) )\n\n";
+    cout << "The || operator means OR . ie if ( (x == 5) || (y == 5) )\n\n";
+    cout << "The ! operator mean NOT equal to. ie if ( var1 != 420)\n\n";
+
+    // Appendix C has order of operations or relational precedence on conditional statements
+
+    return 0;
+}

cpp/ANSI/W1/Day4/Quiz/main.cpp

@@ -0,0 +1,12 @@
+#include <iostream>
+
+int main()
+{
+    using namespace std;
+
+    int x = 8+2*3;
+
+    cout << x << endl;
+
+    return 0;
+}

cpp/ANSI/W1/Day4/Quiz/quiz.txt

@@ -0,0 +1,58 @@
+Quiz
+1. What is an expression?
+
+2. Is x = 5 + 7 an expression? What is its value?
+
+3. What is the value of 201 / 4?
+Depends on the datatype.  If its an INT it would be 50. float would have the decimal. etc...
+4. What is the value of 201 % 4?
+0 because there would be a remainder so its not perfectly divisble
+5. If myAge, a, and b are all int variables, what are their values after
+myAge = 39;
+a = myAge++;
+b = ++myAge;
+
+6. What is the value of 8+2*3?
+14 - follows pemdas?
+7. What is the difference between if(x = 3) and if(x == 3)?
+
+Around page 80
+
+
+8. Do the following values evaluate true or false?
+a. 0
+b. 1
+c. –1
+d. x = 0
+e. x == 0 // assume that x has the value of 0
+
+------------------------------------------------
+Exercises
+1. Write a single if statement that examines two integer variables and changes the
+larger to the smaller, using only one else clause.
+
+2. Examine the following program. Imagine entering three numbers, and write what
+output you expect.
+
+#include <iostream>
+using namespace std;
+int main()
+{
+
+int a, b, c;
+
+cout << “Please enter three numbers\n”;
+cout << “a: “;
+cin >> a;
+cout << “\nb: “;
+cin >> b;
+cout << “\nc: “;
+cin >> c;
+
+if (c = (a-b))
+    cout << “a: “ << a << “ minus b: “ << b << ” equals c: “ << c;
+else
+    cout << “a-b does not equal c: “;
+
+return 0;
+}