need to find such as number within the given range that it should be a prime number and also a happy number. */ #include #include using namespace std;
Types of Loop
Loops are the elements of programming in which a part of code is repeated a particular number of times. Loop executes the series of statements many times till the conditional statement becomes false.
Loops
Any task which is repeated more than one time is called a loop. Basically, loops can be divided into three types as while, do-while and for loop. There are so many programming languages like C, C++, JAVA, PYTHON, and many more where looping statements can be used for repetitive execution.
While Loop
Loop is a feature in the programming language. It helps us to execute a set of instructions regularly. The block of code executes until some conditions provided within that Loop are true.
| We need to find such as number within the given range that it should be a prime number | |
| and also a happy number. | |
| */ | |
| #include<iostream> | |
| #include<math.h> | |
| using namespace std; | |
| bool isHappy(int n) | |
| { | |
| int sum =0; | |
| while(n>0) | |
| { | |
| sum = sum + (n%10) * (n%10); | |
| n = n / 10; | |
| } | |
| if(sum==1) | |
| { | |
| returntrue; | |
| } | |
| elseif(sum==4) { | |
| returnfalse; | |
| } | |
| isHappy(sum); | |
| } | |
| bool isPrime(int n) | |
| { | |
| if(n==1) | |
| returnfalse; | |
| else{ | |
| for(int i=2;i<=(int)sqrt(n);i++) | |
| { | |
| if(n%i == 0) | |
| returnfalse; | |
| } | |
|
returntrue;
|
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