Break and Continue keywords

break => loop terminates permantly

continue => It will skip loop only for the currect instance

Break Keyword

if(n == 25)
{
    break;
}

Example 1️⃣ :

#include <iostream>
using namespace std;

int main() {

    int i;

    for(i=1; i<=100; i++)
    {
      cout<<i<<"\n";
    }
     return 0;
}

Output :

1
2
3
4
5
6
7
.
.
.
100

Explanation :

In a Line no 6 declare variable which name has i and its datatype is integer.
In a Line 8 : for(int i=1; i<=100; i++) for is keyword, i=1 initialized i variable, i++ increase value by 1.
In a Line 10 : print i variable.using cout object

Example 2️⃣ :

#include <iostream>
using namespace std;

int main() {

    int i;

    for(i=1; i<=100; i++)
    {
        if(i==25)
        {
            break;
        }
        cout<<i<<"\n";
    }

}

Output :

1
2
3
4
.
.
.
25

Explanation :

In a Line no 6 we declare one variable which name has i, and datatype is integer.
In a Line no 8 execute the for(i=1; i<=100;i++) for is keyword, i=1 initialize varible and store value 1, i++ increased value by one.
In a Line no 10 check if condition (i==25) enter into if condition.
then condition true break statement.
In a Line no 14 print i variable using cout

Continue Keyword

if(n == 25)
{
    continue;
}

Example 3️⃣ :

#include <iostream>
using namespace std;

int main() {

    int i;

    for(i=1; i<=100; i++)
    {
        if(i==15)
        {
            continue;
        }
        cout<<i<<"\n";
    }

}

Output :

1
2
3
4
5
6
.
.
14
16
17
.
.
.
100

Explanation :

In a Line no 6 we declare one variable which name has i, and datatype is integer.
In a Line no 8 execute the for(i=1; i<=100;i++) for is keyword, i=1 initialize varible and store value 1, i++ increased value by one.
In a Line no 10 check if condition (i==15) enter into if condition.
then condition true continue statement.
In a Line no 14 print i variable using cout

Example 4️⃣ :

#include <iostream>
using namespace std;

int main() {

    int i;

    for(i=1; i<=100; i++)
    {
        if(i==25)
        {
            continue;
        }
        cout<<i<<"\n";
    }

}

Output :

1
2
3
4
5
6
.
.
24
26
27
.
.
.
100

Explanation :

In a Line no 6 we declare one variable which name has i, and datatype is integer.
In a Line no 8 execute the for(i=1; i<=100;i++) for is keyword, i=1 initialize varible and store value 1, i++ increased value by one.
In a Line no 10 check if condition (i==15) enter into if condition.
then condition true continue statement.
In a Line no 14 print i variable using cout

How to Calculate Factorial Number.

 Factorial :

5! => 5*4*3*2*1 = 120

3! => 3*2*1 = 6

10 => 10*9*8*7*6*.....1

----------------

fact = 1; // 1*100*0=>0

sum = 0; // 100+0=>100

Example 1️⃣ : WAP to calculate factorial of n number

#include <iostream>
using namespace std;

int main() {

    int fact = 1;
    int n;

    cout<<"Enter number to calculate factorial: ";
    cin>>n;

    for(int i=1;i<=n; i++)
    {
        fact = fact * i;
    }

     cout<<"Factorial is: "<<fact;
     return 0;
}

Output :

Enter n calculate factorial: 5
Factorial is: 120

Explanation :

In Line no 6 we declare one variable that name has fact and store value 1 and datatype is integer.
In Line no 7 we declare another varible that name has n and datatype is integer.
In Line no 9 Enter number to calculate factorial: from user.
In Line no 10 we stored value in n varible using cin.
In Line no 12 for(int i=1;i<=n; i++) for is keyword, initialize i variable stored value 1, i<=n condition , i++ increased value by one.
In Line no 14 fact assign the value of fact * i and stored into fact variable.
In Line no 17 Print Factorial is: and fact variable using cout object.

Prime and Composite Number

Prime Number : A number that can be divided exactly by 1 and itself. (1,2,3,5,7,11...)

Composite Number : A number that can be divided by multiple number. (8 = 1,2,4,8)

Example 2️⃣ :WAP number is prime or composite

#include <iostream>
using namespace std;

int main() {

    int n;
    cout<<"Enter n: ";
    cin>>n;
    for(int i=2;i<n; i++)
    {
        if(n%i==0)
        {
            cout<<"Composite Number Because it is divisible by"<<i<<"\n";
        }
    }
     return 0;
}

Output :

Enter n : 8
Composite Number Because it is divisible by 2
Composite Number Because it is divisible by 4

Explanation :

In Line no 6 we declare one varible that name has n and datatype is integer.
In Line no 7 Enter n from user .
In Line no 8 we stored value in n varible using cin.
In Line no 9 for(int i=2;i<n; i++) for is keyword, initialize i variable stored value 2, i<n condition , i++ increased value by one.
In Line no 11 check condition if(n%i==0) condition true then print statement otherwise terminate condition.

Example 3️⃣ :

#include <iostream>
using namespace std;

int main() {

    int n;
    cout<<"Enter n: ";
    cin>>n;
    int flag = -1;

    for(int i=2;i<n; i++)
    {
        if(n%i==0)
        {
           flag = i;
           break;
        }
    }
        if(flag == -1)
        {
            cout<<"Number is prime";
        }
        else
        {
             cout<<"Number is composite";
        }
     return 0;
 }

Output :

Enter n : 2
Number is prime

Explanation :

In a Line no 6 we declare one varible that name has n and datatype is integer.
In a Line no 7 Enter n from user .
In a Line no 8 we stored value in n varible using cin.
In a Line no 9 we declare flag varible and stored -1 value and datatype is integer.
In Line no 11 for(int i=2;i<n; i++) for is keyword, initialize i variable stored value 2, i<n condition , i++ increased value by one.
In Line no 13 check condition if(n%i==0) condition true then increase the value of flag and break statement.
In Line no 15 check another condition if(flag == -1) condition true then print Number is prime otherwise jump to else part and print Number is composite

Example 4️⃣ :

#include <iostream>
using namespace std;

int main() {

    int n;
    cout<<"Enter n: ";
    cin>>n;

    int flag = -1;
    for(i=2;i<n; i++)
    {
        if(n%i==0)
        {
           flag = i;
           break;
        }
    }
     if(flag == -1)
        {
            cout<<"Number is Composite";
        }
        else
        {
            cout<<"Number is prime";
        }
     return 0;
}

Output :

Enter n : 2
Number is prime

Explanation :

Break and Continue keywords

Break Keyword​

Continue Keyword​

How to Calculate Factorial Number.​

Prime and Composite Number​

Break Keyword

Continue Keyword

How to Calculate Factorial Number.

Prime and Composite Number