Let's examine the C program for prime numbers. Within this C program, we'll request input from the user and verify if the provided number is a prime number or not.
Example
Example
#include<stdio.h>
int main(){
int n,i,m=0,flag=0;
printf("Enter the number to check prime:");
scanf("%d",&n);
m=n/2;
for(i=2;i<=m;i++)
{
if(n%i==0)
{
printf("Number is not prime");
flag=1;
break;
}
}
if(flag==0)
printf("Number is prime");
return 0;
}
Output:
Output
Enter the number to check prime:56
Number is not prime
Enter the number to check prime:23
Number is prime