Answer / alex

here is answer
http://www.prepjunk.com/151/program-to-find-the-given-number-is-prime-or-not

Answer / rabindra nath das

#include<stdio.h>
#include<conio.h>
void main()
int n,k,fl=0,r;
clrscr();
printf("\n Enter the number==>>");
scanf("%d",&d);
for(k=2;k<=n/2 && fl==0;k++)
{
r=n%k;
if(r==0);
fl=1;
}
if(fl==0)
printf("\n %d is a prime number",n);
else
printf("\n %d is not prime number",n);
getch();
}

main() { int arr[5]={23,67}; printf("%d%d%d",arr[2],arr[3],arr[4]); }

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