Prime Number Check Program in C
#include <stdio.h>
main() {
int n, i, c = 0;
printf("Enter any number n:");
scanf("%d", &n);
//logic
for (i = 1; i <= n; i++) {
if (n % i == 0) {
c++;
}
}
if (c == 2) {
printf("n is a Prime number");
}
else {
printf("n is not a Prime number");
}
return 0;
}
Program Output:prime number in c
#include<stdio.h>
void main(){
int num, i;
int cp = 1;
printf("Enter a number = ");
scanf("%d",&num);
if(num > 0){
for(i = 2; i < num; i++){
if(num % i == 0){
cp = 0;
}
}
if(cp == 1){
printf("%d is a prime number.", num);
}
else{
printf("%d isn't a prime number.", num);
}
}
}Copyright © 2021 Codeinu
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