Write a C program in ‘c’ to find given positive number is prime number or not.

Write a C program in ‘c’ to find given positive number is prime number or not. 

Ans:

#include<stdio.h>

#include<conio.h>

void main()

{
int I,n;

int ctr=0;

printf(“enter any no\n”);

scanf(“%d”&n);

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

{

if(n%i==0)

{

ctr++;

}

}

if(ctr==2)

{

printf(“%d is prime no\n”);

}
else

{

printf(“%d is not a prime no\n”);

}

getch();

}

c programs