#include <stdio.h>
void prime(int num);
int main(){
int n;
printf("Please enter a number:");
scanf("%d",&n);
prime(n);
return 0;
}
void prime(int num){
int i;
for(i=2; i<=num-1; i++){
if(num%i==0){
printf("%d is not a prime number",num);
break;
}
}
if(num==i)
printf("%d is a prime number",num);
}
///another way
#include<stdio.h>
int prime(int a);
int main()
{
int num,i,n;
num=prime(n);
for(i=2; i<=num-1; i++)
{
if(num%i==0){
printf("%d is not a prime number",num);
break;
}
}
if(num==i)
printf("%d is a prime number",num);
return 0;
}
int prime(int a){
printf("Please enter a number:");
scanf("%d",&a);
return a;
}
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