prime numbers in c
#include<stdio.h>
main() {
int n, i, count=0;
printf("Enter Number");
scanf("%d",&n);
for ( i = 1; i<= n; i++) {
if (n % i == 1) {
count++;
}
}
if( count == 2) {
printf("Prime Number");
}
else {
printf("Not A Prime Number");
}
}c program to check prime number
//program to find prime number or not using c programming
#include<stdio.h>
#include<conio.h>
// program starts from here after main() function
void main(){
int n;
int i,count =0;
// count is incremented when the loop is true.
printf("Enter the numbern");
scanf("%d",&n);
for (i=1; i<=n; i++){
if(n%i==0){
count++;
}
}
// for the prime number the no of count is 2
// number is divided by 1 or itself(given number) so count ==2
if(count ==2){
printf("%d is prime number.n",n);
}
// for the composite number the number is divided by more than 2 number.
else{
printf("%d is not prime numbern",n);
}
getch();
}prime number c program
int isPrime(int n) {
for (int i = 2; i < n; i++) if (n % i == 0) return 0;
return 1;
}c program to check prime number
//program to find prime number or not using c programming
#include<stdio.h>
#include<conio.h>
void main(){
int n;
int prime=1;
printf("Enter the numbern");
scanf("%d",&n);
for (int i= 2; i<n; i++){
if(n%i==0){
prime=0;
break;
}
}
if(prime==0 ){
printf(" %d is not prime number.n",n);
}
else{
printf(" %d is prime numbern",n);
}
getch();
}Copyright © 2021 Codeinu
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