Chapter 4

 

 

 


Text Box: Basic Array #include <iostream.h> #include <iomanip.h> main() { int i; /* An array is an ordered list defined by a sequence of numbers, characters, or nothing at all; */ int dad[5] = {3, 4, 5, 2, 14}; //5 array elements and 5 initializers int puppy[5]={0}; // elements initialized to 0 int mom[] = {6, 7, 8, 10, 6}; /* You don't need to insert the subscript if you insert the initializers, the program will interpret this array as one with 5 elements */ for (i=0; i<=4; i++) puppy[i]=dad[i]+mom[i]; cout<<"Element in x"<<setw(20)<<"Element in a"<<setw(10)<<"SUM" <<endl; for (i=0; i<=4; i++) cout<<setw(6)<<dad[i]<<setw(20)<<mom[i]<<setw(15)<<puppy[i] <<endl; return 0; }

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Text Box: Array With If Test #include <iostream.h> main() { int i; int dalmatian[6]; cout<<"Insert values into array"<<endl; for (i=0; i<6; i++) cin>>dalmatian[i]; cout<<"Values greater than 10: "; for (i=0; i<6; i++) if (dalmatian[i]>10) cout<<dalmatian[i]<<" "; return 0; }

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Text Box: Subscripted Subscript #include <iostream.h> #include <math.h> main() { int i; int collie[]={1, 2, 3, 4, 5}; int lassie[6]; cout<<"Cubes: "; for (i=1; i<=5; i++) lassie[i]=pow (i, 3); cout<<"The cube of 3 is"<<endl; cout<<lassie[3]<<endl; // Subscripted Subscript: cout<<lassie [collie[2]]<<endl; /* This is the same as lassie[3] since collie[2]=3 */ return 0; }

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Text Box: Char Array #include <iostream.h> main() { char name[] = "Ice"; /* Array name has 4 elements because all strings end with a null character ('\0') */ char name2[] = {'I', 'c', 'e', '\0'}; char breed[15]; // This array will take in a string /* You must insert a subscript for this array if you aren't going assign values at first */ cout<<"Dog:"<<endl; cout<<name<<endl; cout<<name2<<endl; cout<<"\nInsert breed: "; cin>>breed; cout<<"\nA "<<breed<<"!"<<endl; return 0; }

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Text Box: Double-Subscripted Array #include <iostream.h> main() { int classes[4][3]={{7,10,11},{7,6,12},{2,13,15},{2,5,18}}; // {class hour, # girls, # boys) int countboys=0, countgirls=0, seventh=0; for (int i=0; i<=3; i++) { countboys+=classes[i][2]; countgirls+=classes[i][1]; } cout<<"Boys: "<<countboys<<endl; cout<<"Girls: "<<countgirls<<endl; for (i=0; i<=3; i++) { if (classes[i][0]==7) seventh++; } cout<<endl<<"Total number of 7th hour classes: "<<seventh<<endl <<endl; return 0; }

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Text Box: Array to Function #include <iostream.h> void funct (int[], int); /* This function takes in an array, and the size of the array */ main() { const int arraysize=10; /* Constant variables cannot be modified in the middle of the program */ int list [arraysize]; funct (list, arraysize); return 0; } void funct (int array[], int size) { int chihuahua; cout<<"Insert values into array of size "<<size<<endl; for (chihuahua=0; chihuahua<size; chihuahua++) cin>>array[chihuahua]; cout<<endl; for (chihuahua=0; chihuahua<size; chihuahua++) cout<<array[chihuahua]<<" "; }

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Text Box: Bubble Sort #include <iostream.h> main() { int i, z, store; int labrador[]={6, 3, 1, 2, 9, 33, 2, 4}; cout<<"LIST: "; for (i=0; i<=7; i++) cout<<labrador[i]<<" "; for (i=0; i<7; i++) /* Outter loop keeps track of what element will be compared to all other elements */ { for (z=0; z<7; z++) /* Inner loop keeps track of elements that will be compared to each I */ if ( labrador[z] < labrador[z+1] ) /* Check if a certain element is smaller than the one after it. If it is, then they must switch places in the array */ { store = labrador[z]; /* store is an intermediate variable that holds an element of the array when it is being flopped with another element */ labrador[z]=labrador[z+1]; labrador[z+1]=store; } } cout<<"\nSORTED LIST (descending order): "; for (i=0; i<=7; i++) cout<<labrador[i]<<" "; cout<<endl; return 0; }