// ============================================
// Variables and Arrays (p. 7)

#include <iostream>
#include <climits> 
using namespace std; 

int main()
{
  cout << INT_MIN << " " << INT_MAX << "\n";
 	
  return 0; 
}





// ============================================
// Variables and Arrays (p. 8)

cout << "int " << sizeof(int) << "\n";
cout << "char " << sizeof(char) << "\n";
cout << "bool " << sizeof(bool) << "\n";

short s = 0;
cout << "short int " << sizeof(s) << "\n";
long l = 0;
cout << "long int " << sizeof(l) << "\n";

cout << "unsigned short int " << sizeof(unsigned short) << "\n";
cout << "unsigned int " << sizeof(unsigned) << "\n";
cout << "unsigned long int " << sizeof(unsigned long) << "\n";







// ============================================
// Variables and Arrays (p. 9)

int i = 0;
short sGood = 32765;

while (i < 10)
{
  short sBad = sGood + i;
  cout << sGood + i << " " << sBad << "\n";
  i = i + 1;
}







// ============================================
// Variables and Arrays (p. 12)

#include <iostream>
using namespace std;

int main()
{
  for(int c = 33; c <= 126; c++) 
  {
    cout << c << " ";    
    char cAsChar = c;
    cout << cAsChar << "\n";
  }
  
  return 0;
}







// ============================================
// Variables and Arrays (p. 13)

#include <iostream>
using namespace std;

int main()
{
  cout << "   0 1 2 3 4 5 6 7 8 9\n";
  cout << " 3      ";

  for(int c = 33; c <= 126; c++) 
  {
    if(c % 10 == 0)
    {
      if(c / 10 <= 9)
        cout << " ";
      cout << c / 10;
    }
    char cAsChar = c;
    cout << " " << cAsChar;
    if(c % 10 == 9)
      cout << "\n";
  }  
  return 0;
}






// ============================================
// Variables and Arrays (p. 17)

int bad = 0;
for(int i = 0; i < 100; i++)
{
  float f = sqrt(i);
  cout << f << " " << f * f << " ";
  
  if(f * f != i)
  {
    cout << "!!!";
    bad++;
  }
  cout << "\n";
}
cout << "bad precision: " << bad;






// ============================================
// Variables and Arrays (p. 18)

#include<iostream>
#include<cmath>
#include<iomanip> // for setprecision()
using namespace std;

int main()
{
  for(int i = 0; i < 100; i++)
  {
    float f = sqrt(i);
    cout << f << " " << setprecision(10) << f * f << " ";
    cout << "\n";
  }
  return 0;
}







// ============================================
// Variables and Arrays (p. 20)

bool b = 0;
cout << b << "\n"; 
	
b = 1; 
cout << b << "\n"; 
	
b = 10; 
cout << b << "\n"; 
	
b = 0.1; 
cout << b << "\n"; 
	
b = -1;
cout << b << "\n"; 







// ============================================
// Variables and Arrays (p. 29)

int grade1 = 0, grade2 = 0;
cin >> grade1 >> grade2;
cout << (grade1 + grade2) / 2;






// ============================================
// Variables and Arrays (p. 35)

int score[5];
for(int i = 0; i < 5; i++)
  cin >> score[i];
for(int i = 0; i < 5; i++)
  cout << score[i] << " ";






// ============================================
// Variables and Arrays (p. 38)

int array[100]; 
	
for(int i = 0; i < 100; i++)
{
  cout << array[i] << " ";
  if (i % 10 == 9)
    cout << "\n";
}







// ============================================
// Variables and Arrays (p. 39)

int daysInMonth1[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; 
int daysInMonth2[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; 
cout << sizeof(daysInMonth2); // 4 * 12 = 48
int daysInMonth3[12] = {31, 28, 31}; // nine 0s
int daysInMonth4[3] = {1, 2, 3, 4}; // error! 







// ============================================
// Variables and Arrays (p. 40)

#include<iostream>
using namespace std;

int main()
{
  int a[4] = {1, 2, 3, 4};
  int b[4] = {4, 3, 2, 1};
  
  int ip = 0;
  for(int i = 0; i < 4; i++)
    ip += a[i] * b[i];
  cout << ip << "\n";

  return 0;
}







// ============================================
// Variables and Arrays (p. 41)

int array[100] = {0}; 
	
for (int i = 0; i < 500; i++)
{
  cout << array[i] << " ";
  if (i % 10 == 9)
    cout << "\n";
}







// ============================================
// Variables and Arrays (p. 47)

float value[10] = {0};
for (int i = 0; i < 10; i++)
  cin >> value[i];

float max = value[0];
for(int i = 1; i < 10; i++)
{
  if(value[i] > max)
    max = value[i];
}
cout << max;







// ============================================
// Variables and Arrays (p. 56)

int a[2][3] = {{1, 2, 3}, {1, 2, 3}};
int b[2][3] = {{4, 5, 6}, {7, 8, 9}};
int c[2][3] = {0};

for (int i = 0; i < 2; i++) // matrix addition
  for (int j = 0; j < 3; j++)
    c[i][j] = a[i][j] + b[i][j];

for(int i = 0; i < 2; i ++) // print out c
{
  for(int j = 0; j < 4; j ++)
    cout << c[i][j] << " ";
  cout << "\n";
}







// ============================================
// Variables and Arrays (p. 57)

int a[2][3] = {1, 1, 1, 2, 2, 2};
int b[3][4] = {1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3};
int c[2][4] = {0};
  
for(int i = 0; i < 2; i++)
  for(int j = 0; j < 4; j++)
    for(int k = 0; k < 3; k++)
      c[i][j] += a[i][k] * b[k][j];
  
// print out c







// ============================================
// Variables and Arrays (p. 58)

int a[2][3];
cout << a << " " << a[0] << " " << a[1] << endl;







// ============================================
// Variables and Arrays (p. 59)

int a[2][3];
cout << a << " " << a[0] << "\n";
cout << a[1] << " " << a + 1 << "\n";
cout << sizeof(a) << " " << sizeof(a[0]) << "\n";