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arrays help

Nov 9, 2016 at 2:42am
Pg0715 (49)
so i need help trying to get the sequential search to where i need to have .
The function return the index where key is found or return -1 if not found and display a message if found or if not found

The numbers in the array are 80 32 20 16 10
=============
1: fill the array
2: print the array
3: calculate the average
4: show the highest number
5: double each number
6: selection sort in descending order
7: sequential search
8: show bar graph
9: quit
=============
Enter your choice:7

Enter the key:20

20 was found at index 2
but not sure how

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#include<iomanip>
#include<iostream>

using namespace std;

const int SIZE=5;

void fillArray(int ar[]);
void printArray(const int ar[]);
double findAvgArray(const int ar[]);
int checkHighestArray(const int ar[]);
void doubleNumArray(int ar[],int s);
void sortArray(int ar[],int s);
bool sequeSearch(const int ar[],int s,int k);
void showBarGraph(int ar[]);
int main()
{
  // const int SIZE=5;
  int ar[SIZE];
  //fillArray[ar];
  int choice;
  int k;
  do{
    cout<<"==================="<<endl;
    cout<<"1:Fill the array"<<endl;
    cout<<"2:Print the array"<<endl;
    cout<<"3:Calculate the average"<<endl;
    cout<<"4:Show the highest Number"<<endl;
    cout<<"5:Double each number"<<endl;
    cout<<"6:sort in descending order"<<endl;
    cout<<"7:Sequential Search"<<endl;
    cout<<"8:Show Bar Graph"<<endl;
    cout<<"9:Quit"<<endl;
    cout<<"==================="<<endl;
    cout<<"Enter your choice: ";
    cin>>choice;

    switch(choice)
      {
 case 1: fillArray(ar);
        break;
      case 2: printArray(ar);
        break;
      case 3:findAvgArray(ar);
        break;
      case 4:cout<<"Highest number is "<<checkHighestArray(ar);
        break;
      case 5:doubleNumArray((ar),SIZE);
        break;
      case 6:sortArray((ar),SIZE);
        break;
      case 7:cout<<"Enter the Key: ";
        cin>>k;
        sequeSearch((ar),SIZE,k);
        break;
      case 8: showBarGraph(ar);
        break;
      case 9: cout<<"Thank you for using our System."<<endl;
        break;
      default:cout<<"Invalid choice"<<endl;
 break;
      }
  }while(choice!=9);

  // fillArray(ar);
  //printArray(ar);
  return 0;
}
void fillArray(int ar[])
  {
    for(int i=0;i<SIZE;i++)
      {
        cout<<"Enter a number ";
        cin>>ar[i];
      }
    cout<<endl;
  }

  void printArray(const int ar[])
  {
    cout<<"The numbers in the array are ";

    for(int i=0;i<SIZE;i++)
      cout<<ar[i]<<" ";

    cout<<endl;
  }
double findAvgArray(const int ar[])
{
  cout<<"The average number is ";
  double total=0;
  for(int i=0;i<SIZE;i++)
    total +=ar[i];
  total=total/SIZE;
  cout<<total<<endl;
  return total;
}
int checkHighestArray(const int ar[])
{
  int highestNumber=0;
 for(int i=1;i<SIZE;i++)
    if(ar[i]>ar[highestNumber])
      highestNumber=i;

    return ar[highestNumber];

  //cout<<"The highest number is "<<highestNumber<<endl;
  //return ar[highestNumber];
}
void doubleNumArray(int ar[],int s)
{
  int temp;
  //cout<<"The numbers in the array doubled are ";
  for(int i=0;i<SIZE;i++)
  temp=ar[i]*2;
  cout<<endl;

}
void sortArray(int ar[],int s)
{
 int smallIndx;
  int temp;

  for(int last=SIZE-1; last>=1; last--)
    {
      smallIndx =0;
      for(int i= 1; i<=last; i++)
        {
          if(ar[i] < ar[smallIndx])
            smallIndx= i;
        }
      temp=ar[smallIndx];
      ar[smallIndx]= ar[last];
      ar[last]=temp;
    }
  // cout<<"All entries in the array have been sorted."<<endl;
  cout<<endl;
 }

bool sequeSearch(const int ar[],int s, int k)
{
  int temp=0;
  for(int i=0;i<s;i++)
    {
      if(ar[i]==k)
        {
          temp=1;
          break;
        }
    }
}

void showBarGraph(int ar[])
{
  for (int c=0;c<SIZE;c++)
    {
      cout<<"Slot "<<c+1<<" : ";
      for(int f=0;f<ar[c];f++)
        {
          cout<<"*";
        }
      cout<<endl;
    }
}
Edit & Run

as well need help with bar graph to display like this mine isnt correct anything helps thank you
The numbers in the array are 20 16 32 80 10
=============
1: fill the array
2: print the array
3: calculate the average
4: show the highest number
5: double each
number
6: selection sort in descending order
7: sequential search
8: show bar graph
9: quit
=============
Enter your choice:
8
Slot 0: **
Slot 1: *
Slot 2: ***
Slot 3: ********
Slot 4: *
Last edited on Nov 9, 2016 at 2:57am
Nov 9, 2016 at 3:31am
comaHelp (10)
Your code works fine with 20, 16, 32, 80, 10, as long as you choose 1 to fill the array first before you choose 8 to show bar graph.
Nov 9, 2016 at 3:42am
Pg0715 (49)
it doesnt display how i want it when i run it shows
The numbers in the array are 20 16 32 80 10
===================
1:Fill the array
2:Print the array
3:Calculate the average
4:Show the highest Number
5:Double each number
6:sort in descending order
7:Sequential Search
8:Show Bar Graph
9:Quit
===================
Enter your choice: 8
Slot 1 : ********************
Slot 2 : ****************
Slot 3 : ********************************
Slot 4 : ********************************************************************************
Slot 5 : **********

this is how it should be

Slot 1 : **
Slot 2 : *
Slot 3 : ***
Slot 4 : ********
Slot 5 : *
===================
so it displays the first number only
Last edited on Nov 9, 2016 at 3:43am
Nov 9, 2016 at 3:44am
comaHelp (10)
Here is my full output.
===================
1:Fill the array
2:Print the array
3:Calculate the average
4:Show the highest Number
5:Double each number
6:sort in descending order
7:Sequential Search
8:Show Bar Graph
9:Quit
===================
Enter your choice: 1
Enter a number 20
Enter a number 16
Enter a number 32
Enter a number 80
Enter a number 10

===================
1:Fill the array
2:Print the array
3:Calculate the average
4:Show the highest Number
5:Double each number
6:sort in descending order
7:Sequential Search
8:Show Bar Graph
9:Quit
===================
Enter your choice: 8
Slot 1 : ********************
Slot 2 : ****************
Slot 3 : ********************************
Slot 4 : ********************************************************************************
Slot 5 : **********
===================

What could be wrong with it?
Nov 9, 2016 at 3:47am
Pg0715 (49)
so here is an example of what it should display
The numbers in the array are 10 8 16 40 5
=============
1: fill the array
2: print the array
3: calculate the average
4: show the highest number
5: double each number
6: selection sort in descending order
7: sequential search
8: show bar
graph
9: quit
=============
Enter your choice:
8
Slot 0: *
Slot 1:
Slot 2: *
Slot 3: ****
Slot 4:
so it displays the first number only
Nov 9, 2016 at 3:48am
comaHelp (10)
I understand it now.
You can use this function : 
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void showBarGraph(int ar[])
{
	int i, j, k;
	for(i = 0; i < SIZE; i++)
	{
		k = ar[i] / 10;
		for(j = 0; j < k; j++) cout << '*'; cout << endl;
	}
}
Nov 9, 2016 at 4:02am
Pg0715 (49)
do you get how to get the sequential search for case 7??
Last edited on Nov 9, 2016 at 4:17am
Nov 9, 2016 at 4:22am
Unisarus (9)
Well, something like this should suffice : 

bool sequeSearch(const int ar[],int s, int k)
{
  int temp=0;
  for(int i=0;i<s;i++)
    {
      if(ar[i]==k)
        {
          temp=1;
          break;
        }
    }
    return (temp == 1);
}
Nov 9, 2016 at 4:42am
Pg0715 (49)
my question is how can i display the message in main
Enter your choice:7

Enter the key:20

20 was found at index 2 <===display this and as well display when the number entered wasnt correct
Nov 9, 2016 at 5:17am
Unisarus (9)
You can use this fix : 
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bool sequeSearch(const int ar[], int s, int k)
{
  int temp=0;
  for(int i=0;i<s;i++)
    {
      if(ar[i]==k)
        {
          temp=1;
          break;
        }
    }

    if(temp != 0)
	{
		cout << k << " was found at index " << i + 1 << endl;
	}
    return (temp == 1);
}
Nov 9, 2016 at 5:22am
Pg0715 (49)
is their a way i could be able to display that message in main though ?? instead of inside the bool sequeSearch function.
Nov 9, 2016 at 5:34am
Unisarus (9)
You can use it but I am not sure.
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case 7 : 
        int s_i;
        cout<<"Enter the Key: ";
        cin>>k;
        if(sequeSearch((ar), SIZE, s_i, k))
        cout << k << " was found at index " << s_i + 1 << endl;
        break;


And the function : 
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bool sequeSearch(const int ar[], int s, int &s_i, int k)
{
  int temp=0;
  for(int i=0;i<s;i++)
    {
      if(ar[i]==k)
        {
          temp=1;
          break;
        }
    }

    if(temp != 0)
	{
		s_i = i;
	}
    return (temp == 1);
}


Please change the function prototype also.
bool sequeSearch(const int ar[] , int s , int &s_i, int k);
Nov 9, 2016 at 7:05am
Pg0715 (49)
it doesnt work it gives me an error in line 15
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