## Verification of a given number if prime or not

Program Description

Accepts a value from user and checks whether the given number is a prime number or not using function.

Program
```/*******************************************
*  code.cheraus.com
*
*  Verification of a given number if prime or not
*
*
*******************************************/
#include<stdio.h>

//function prototype
int prime(int no);

int main()
{
int num,ans;

//taking user input
printf("\nEnter the number : ");
scanf("%d",&num);
ans = prime(num);

if(ans==1)
printf("\nPrime Number\n");
else
printf("\nNot a Prime Number");
return 0;
}

/*

Function definition for prime function

Function: prime() .The function takes a single integer number and
cheack whether the number is prime or not
Input  : Takes a single integer as argument,which is to be verified.

Return : The function returns
1-> if the given number is prime
0-> if the given number is not prime

*/
int prime(int no)
{
int i;
for(i=2;i<no;i++)
{
if(no%i==0)
return 0;  //not a prime number
}

//prime number
return 1;
}
```

Output
Test Case 1:

Enter the number : 24
Not a Prime Number
Test Case 2:

Enter the number : 47
Prime Number
Test Case 3:

Enter the number : 49
Not a Prime Number