Whether a given number is prime or not

#include<stdio.h>

void main()

{

int n,i=2;

printf("\nEnter a number \n");

scanf("%d",&n);

for(i=2;i<=n-1;i++)

{

if(n%i==0)

{

printf("%d isn't prime...!\n",n);

break;

}

}

if(i==n)

printf("%d is prime...!\n",n);

}

Output

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