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cout problem

lyn18 (7)
this is my program.

#include <iostream>
#include <conio.h>

using namespace std;

int main()
{

int num, isPrime,i,n=10, max=0, min=99, even=0, odd=0;
int qa=0, qb=0, qc=0, qd=0, qe=0;
cout<<"Note that prime number will refer as [1], Not prime number will refer as [0]"<<endl;
cout << "Enter 20 integer numbers from 0 to 99: "<<endl;

for (i=1;i<=n;i++)
{

cout << "Input " << i <<":";
cin >> num;

if (num>max)
max=num;
if (num<min)
min=num;
if (num%2==0)
even++;
else
odd++;


int isPrime=1;

if (num==0)
{
isPrime=0;
}

if (num==1)
{
isPrime=0;

}
if (num%2==0)
{
isPrime=0;
}
if(num==2)
{
isPrime=1;
}

for(int i=2;i<(num/2);i++)
{
if(num%i==0 )
{
//not prime number
isPrime=0;
break;
}

}

}
cout<<"["<<isPrime<<"]"<<endl;







switch(num)
{
case 0:
if(num%8==0)
qa++;
break;
case 1:
if(num%8==1)
qb++;
case 2:
if (num%8==2)
qc++;
case 3:
if (num%8==3)
qd++;
default:
qe++;
break;
}

}

cout<<num<<endl;
cout<<"max is"<<max<<endl;
cout<<"min is"<<min<<endl;
cout<<"Total number of even is "<<even<<endl;
cout<<"Total number of odd is "<<odd<<endl;
cout<<"Numbers that have remainders of 0"<<endl;
cout<<q0<<endl;
cout<<"Numbers that have remainders of 1"<<endl;
cout<<q1<<endl;
cout<<"Numbers that have remainders of others"<<endl;
cout<<qd<<endl;


getch();
cin.get();
}



but my problem, i can't get to display my answer. when i write the switch fn, all the cout have the red line under it. i dont know how to fix it.
Ch1156 (1999)
Please past your code in code tags

there the <> symbol, your code is very hard to read.
Last edited on
Ch1156 (1999)
Ok well first of all your cout statements were outside of main, so thats why you were having the errors.

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#include <iostream>
#include <conio.h>

using namespace std;

int main()
{

    int num, isPrime,i,n=10, max=0, min=99, even=0, odd=0;
    int qa=0, qb=0, qc=0, qd=0, qe=0;

    cout<<"Note that prime number will refer as [1], Not prime number will refer as [0]"<<endl;
    cout << "Enter 20 integer numbers from 0 to 99: "<<endl;

    for (i=1;i<=n;i++)
    {
        cout << "Input " << i <<":";
        cin >> num;

        if (num>max)
            max=num;
        if (num<min)
            min=num;
        if (num%2==0)
            even++;
        else
            odd++;


        int isPrime=1;

        if (num==0)
        {
            isPrime=0;
        }

        if (num==1)
        {
            isPrime=0;
        }

        if (num%2==0)
        {
            isPrime=0;
        }

        if(num==2)
        {
            isPrime=1;
        }

    for(int i=2;i<(num/2);i++)
    {
        if(num%i==0 )
    {
    //not prime number
        isPrime=0;
        break;
    }

    }

    }

cout<<"["<<isPrime<<"]"<<endl;

switch(num)
{
case 0:
if(num%8==0)
qa++;
break;
case 1:
if(num%8==1)
qb++;
case 2:
if (num%8==2)
qc++;
case 3:
if (num%8==3)
qd++;
default:
qe++;
break;
}

cout<<num<<endl;
cout<<"max is"<<max<<endl;
cout<<"min is"<<min<<endl;
cout<<"Total number of even is "<<even<<endl;
cout<<"Total number of odd is "<<odd<<endl;
cout<<"Numbers that have remainders of 0"<<endl;
cout<<q0<<endl;
cout<<"Numbers that have remainders of 1"<<endl;
cout<<q1<<endl;
cout<<"Numbers that have remainders of others"<<endl;
cout<<qd<<endl;


getch();
cin.get();

}


There are just 2 errors now, im sure you can fix them.

In function 'int main()':|
error: 'q0' was not declared in this scope|
error: 'q1' was not declared in this scope|

Last edited on
lyn18 (7)
i try to fix it, but it didn't display the output for q0-q4. do i have to put the cout for q0-q4 in the for loop?
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#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
	int num, isPrime,i,n=5, max=0, min=99, even=0, odd=0; 
	int q0=0, q1=0, q2=0, q3=0, q4=0;
	cout<<"Note that:"<<endl;
	cout<<"Prime number will refer as [1]"<<endl;
	cout<<"Not prime number will refer as [0]"<<endl<<endl;
	cout << "Enter 20 integer numbers from 0 to 99: "<<endl;
	
    for (i=1;i<=n;i++)
    {
       	cout << "Input " << i <<":";
		cin >> num;
		
		if(num>99)
			break;
		if (num>max)
		max=num;
		if (num<min)
		min=num;
		if (num%2==0)
			even++;
		else
			odd++;

		int isPrime=1;

		if (num==0)
		{
			isPrime=0;
		}

		if (num==1)
		{
			isPrime=0;
			
		}
		if (num%2==0)
		{
			isPrime=0;
		}
		if(num==2)
		{
			isPrime=1;
		}

		
		for(int i=2;i<(num/2);i++)
		{
			if(num%i==0 )
			{
		//not prime number
				isPrime=0;
				break;
			}
			
		}
		
		cout<<"["<<isPrime<<"]"<<endl;

		switch(num)
		{
		case 0:
			if(num%8==0)
				q0++;
			break;
		case 1:
			if(num%8==1)
				q1++;
		case 2:
			if (num%8==2)
				q2++;
		case 3:
			if (num%8==3)
				q3++;
		default:
			q4++;
			break;
		}

	
	}
	
	cout<<"max is"<<max<<endl;
	cout<<"min is"<<min<<endl;
	cout<<"Total number of even is "<<even<<endl;
	cout<<"Total number of odd is "<<odd<<endl;
	cout<<"Numbers that have remainders of 0"<<endl;
	cout<<q0<<endl;
	cout<<"Numbers that have remainders of 1"<<endl;
	cout<<q1<<endl;
	cout<<"Numbers that have remainders of 2"<<endl;
	cout<<q2<<endl;
	cout<<"Numbers that have remainders of 3"<<endl;
	cout<<q3<<endl;
	cout<<"Numbers that have remainders of others"<<endl;
	cout<<q4<<endl;
	
	
	getch();
	cin.get();
}
Last edited on
Ch1156 (1999)
Yes try that.
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