Lesson 10 Array

13 searching.cpp

#include<iostream>
using namespace std;
int main(){
int data[100]={0};
int number=0;
cout<<"Please enter numbers (1-100)"<<endl;
cin>>number;

for ( int i=0; i<number ; i++){

    cout<< i <<" Please enter number :";
    cin>>data[i];
    cout<<endl;
}


for ( int ii=0; ii<number ; ii++){


    if(data[0]<data[ii]){
        data[0]=data[ii];
    }


}
cout<<"The largest number is "<<data[0]<<endl;

for(int j=0; j<number; j++){
    cout<<j<<" data is :"<<data[j]<<endl;

}


return 0;
}

14 insert Data to the Array

#include<iostream>
#include<conio.h>
using namespace std;
int main()
{

	int arr[50], size, insert, i, pos;
	cout<<"Enter Array Size : ";
	cin>>size;//5
	cout<<"Enter array elements : ";
	for(i=0; i<size; i++)
	{
		cin>>arr[i];
	}
	cout<<"Enter element to be insert : ";
	cin>>insert;//100
	cout<<"At which position (Enter index number) ? ";
	cin>>pos;//3
	// now create a space at the required position
	for(i=size; i>pos; i--) //{ 5 , 6, 7, 8, 9, 10}//index 2
	{                                //3
		arr[i]=arr[i-1];//3

	}
	arr[pos]=insert;//100//pos3
	cout<<"Element inserted successfully..!!\n";
	cout<<"Now the new array is : \n";
	for(i=0; i<size; i++)
	{
		cout<<arr[i]<<" ";
	}
	getch();
}

15delete.cpp

#include<iostream>
#include<conio.h>
using namespace std;
int main()
{

	int arr[50], size, i, del, count=0;
	cout<<"Enter array size : ";
	cin>>size;
	cout<<"Enter array elements : ";
	for(i=0; i<size; i++)
	{
		cin>>arr[i];
	}
	cout<<"Enter element to be delete : ";
	cin>>del;
	for(i=0; i<size; i++)
	{
		if(arr[i]==del)//3
		{
			for(int j=i; j<(size-1); j++)//j=3
			{
				arr[j]=arr[j+1];//4
			}
			count++;
			break;
		}
	}
	if(count==0)
	{
		cout<<"Element not found..!!";
	}
	else
	{
		cout<<"Element deleted successfully..!!\n";
		cout<<"Now the new array is :\n";
		for(i=0; i<(size-1); i++)
		{
			cout<<arr[i]<<" ";
		}
	}
	getch();
}

Example 1 Array

#include<stdio.h>
#include<conio.h>
int main() {
	int name[] = { 10,20,30,40,50};	

	int i = name[3];
	printf_s("This is array %d\n", i);
	_getch();
	return 0;
}

Example 2 Array Size

#include<stdio.h>
#include<conio.h>
int main(){
  int name[7] = { 10,20,30,40,50};
  int i = name[6];
	printf_s("This is array %d\n", i); // underscore _s ကို ျဖုတ္ေရးႏိုင္သည္
	_getch(); // error တက္ေနလ်င္ _ ကို ျဖုတ္ေရးနိုင္သည္။
	return 0;

}

Example 3 Print array data

#include<stdio.h>
#include<conio.h>
int main() {

	int name[5];
	int i ;
	for (i = 0; i < 10; ++i) {
		printf_s("Theis is array %x\n ",name[i]);
	}
	_getch();
	return 0;
}

Example 4 Printing Value

#include<stdio.h>
#include<conio.h>
int main() {

	int name[5] = { 1,2,3,4,5 };
	int i ;
	for (i = 0; i < 5; ++i) {
		printf_s("Theis is array %d\n ",name[i]);
	}
	_getch();
	return 0;
}

Example 5 Array’s Size With a Symbolic Constant

#include<stdio.h>
#include<conio.h>
#define SIZE 5
int main() {
	int Aname[SIZE];
	for (int j = 0; j < SIZE; ++j) {
		Aname[j] = 2 + 2 * j;
	}
	printf_s("%s%13s\n", "Element", "Value");
	for (int i = 0; i < SIZE; ++i) {
		printf_s("%7u%13d\n", i, Aname[i]);
	}
	_getch();
	return 0;
}

Example 6 Summing the Elements of an Array

#include<stdio.h>
#include<conio.h>
#define WINHTUT 12
int main() {

	int a[WINHTUT] = { 1,3,5,4,7,2,99,16,45,67,89,45 };
	int total = 0;
	for (int i = 0; i < WINHTUT; ++i) {
		total += a[i];
	}
	printf_s("Total of array element values is %d\n", total);

	_getch();
	return 0;
}

Example 7 Using Arrays to Summarize Survey Results

#include<stdio.h>
 #include<conio.h>
 #define RESPONSES_SIZE 40
 #define FREQUENCY_SIZE 11
int main() {
		int frequency[FREQUENCY_SIZE] = { 0 };

		int responses[RESPONSES_SIZE] = { 2, 3, 2, 3, 4, 2, 3, 2, 3, 10,
		2, 2, 3, 3, 2, 10, 3, 3, 2, 2, 2, 2, 2, 2,2, 2, 2, 2, 3, 3,
		3, 3, 3, 2, 2, 3, 3, 3, 2, 10 };
		for (int answer = 0; answer < RESPONSES_SIZE; ++answer) {				
			 ++frequency[responses[answer]];
	}
		printf_s("\n");
		printf("%s%17s\n", "Rating", "Frequency");
		for (int rating = 1; rating < FREQUENCY_SIZE; ++rating) {
				printf("%6d%17d\n", rating, frequency[rating]);
		
	}
		_getch();
		return 0;	
}

Example 8 Graphing Array Element Values with Histograms

#include<stdio.h>
#include<conio.h>
#define SIZE 5 // array တစ္ခုရဲ႕ size ကို စတင္ေျကျငာေပးျခင္း

int main() {

	int n[SIZE] = { 19, 3, 15, 7, 11 }; 
                                                                                                  
	printf("%s%13s%17s\n", "Element", "Value", "Histogram");

	for (int i = 0; i < SIZE; ++i) {
		printf("%7u%13d ", i, n[i]); 
							
		for (int j = 1; j <= n[i]; ++j) { 
									
			printf("%c", '*');
		}
		puts("");
	}

	_getch();
	return 0;
}

Example 9 Rolling a Die 60,000,000 Times and Summarizing the Results in an Array

#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
#include<time.h>
#define SIZE 7

int main() {
	unsigned int frequency[SIZE] = { 0 };

	srand(time(NULL));
	for (unsigned int roll = 1; roll <= 60000000; ++roll) {
		int face = 1 + rand() % 6;
		++frequency[face];
	}
	printf("%s%17s\n", "Face", "Frequency");
	for ( int face = 1; face < SIZE; ++face) {
		printf("%4d%17d\n", face, frequency[face]);
	}
	_getch();
	return 0;
}

F Example 10 Printing Null character

#include<stdio.h>
#include<conio.h>
int main() {

	char aung[] = "winhtut";
	printf_s("%d", aung[7]);

	_getch();
	return 0;
}

F Example 11 Character Array with characters

#include<stdio.h>
#include<conio.h>
#define END 8
int main() {

	char aung[] = {'w','i','n','h','t','u','t','\0'};
	for (int i = 0; i <END; i++)
	{
		printf_s("%c\n", aung[i]);
	}
	_getch();
	return 0;
}

F Example 12 Inputting into a Character Array

#include<stdio.h>
#include<conio.h>
#define LENGTH 20
int main() {

	char gh1[LENGTH];
	char gh2[] = "green hackers";
	printf("%s","Please enter characters :");
	scanf("%19s", gh1);
               printf("gh1 is = %s\n",gh1);
                printf("gh2 is = %s\n",gh2);

               for (int i = 0; i < LENGTH && gh1[i] != '\0'; ++i) {
                              printf("%c",gh1[i]);
               }
	getch();
	return 0;
}

F Example 13 Passing Arrays to function

#include<stdio.h>
#include<conio.h>
#include<math.h>
void func(int arr[], int val);

int main() {

	int gh[5] = { 2,3,4,5,6 };
	int power;
	printf_s("enter power number");
	scanf_s("%d", &power);
	func(gh, power);
	_getch();
	return 0;
}
void func(int arr[], int val) {
	int i;
	for (i = 0; i < 5; i++) {
		printf_s("value %d: %f\n", (i + 1), pow(arr[i], val));
	}
}