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Array problem

malcolmdko (31)
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#include <iostream>
#include<iomanip>

using namespace std;

bool exists(int array[], int length, int newnum)
{
     for (int i=0; i<length; i++)
     {
         if (newnum == array[i])
         {
                     
                         cout<<"true"<<endl;
                      return true;
              
         }
       
         
     }
     return false;
}

int main()
{
    
    int count208, num208=0, countMajor, Majornum=0;
    int cosc208[25];
    int CTECstudents[25];
        for(int index=0; index<25;index++)
        {
                cosc208[index]=-1;
                CTECstudents[index]=1;
        }
        
        cout << "Enter the number of students who are taking COSC 208"<<endl;
         cin >> count208;
         for(int i=0;i<count208;i++)
         {
            
                cout << "Enter the next id of a 208 student:" <<endl;
                 cin >> num208;
    
   
                 while(exists(cosc208,count208,num208) == true)
                 {
                       cout << "Enter a unsued id of a 208 student:" <<endl;
                        cin >> num208;
                 }


                 cosc208[i]=num208;
                 for(int t=0;t<i+1;t++)
                 {
                       cout << cosc208[t]<<" ";
                 }

         }

         cout << "Enter the number of students who are majoring in CTEC"<<endl;
           cin >> countMajor;
         for(int i1=0;i1<countMajor;i1++)
         {
               cout << "Enter the next id of a CTEC major" <<endl;
                cin >> Majornum;
                while(exists(CTECstudents,countMajor,Majornum) == true)
                {
                      cout <<"Enter a unsued id of a CTEC major:" <<endl;
                      cin >> Majornum;
                }

                CTECstudents[i1]=Majornum;
                 for(int we=0;we<i1+1;we++)
                 {
                       cout << CTECstudents[we]<<" ";
                 }
          }

          cout <<"This is the differense of the 2 arrays" << endl;
          
int ntCtec[50];
bool flag=false;
bool flag1=false;
int v=0;
int m=v+1;
for(int y=0; y<count208;y++)
{
        ntCtec[y]=-1;
        }
for(int k=0; k < count208; k ++)
{ 
        for(int q=0; q<countMajor; q++)
        {
                if(cosc208[k]==CTECstudents[q])
                flag=true;
                }
                if (flag==false)
                cout<<cosc208[k]<<" ";
                }
                
                
        for(int p=0; p < countMajor; p ++)
{ 
        for(int n=0; n<count208; n++)
        {
                if(cosc208[n]==CTECstudents[p])
                flag1=true;
                }
                if (flag1==false)
                cout<<CTECstudents[p]<<" ";
              
                }
        
         
system("pause");
return 0;

}
this program is supposed to take imputs for to arrays and compare the arrays to see the differences and then output the arrays onto the print screen
i am having trouble with printing the differences of the two arrays if you run the program you will understand you cannot enter the same id twice in one array.
turbozedd (153)
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#include <iostream>

using namespace std;

int main(int argc, char *argv[] )
{
    int a[6]={1,2,15,4,5,6};
    int b[5]={2,-1,6,10,15};
    
    int j;
    bool b_in_a;
    for(int i=0; i<6; ++i){
        j=0;
        b_in_a=false;
        while(!(b_in_a) && j<5)
            if(a[i]==b[j++]) b_in_a=true;
        if(b_in_a) cout << "b[ " << j-1 << " ] = " << b[j-1] << "\tis a[ " << i << " ]"<< endl;
    }
    
    
    return 0;
}
mqj0712 (1)
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for(int k=0; k < count208; k ++)
{ 
        for(int q=0; q<countMajor; q++)
        {
                if(cosc208[k]==CTECstudents[q])
                flag=true;
         }
          if (flag==false)
         cout<<cosc208[k]<<" ";
 }


I just marked the error in italic, you need to add a break after a pair of elements are matched.

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        for(int q=0; q<countMajor; q++)
        {
                if(cosc208[k]==CTECstudents[q])
                {
                      flag=true;
                      break;
                 }

         }
               if (flag==false)
               {
                     cout<<cosc208[k]<<" ";
                }
                flag = false;
        }
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