prime number program in c
bool isPrime(int x = 0) { /* Without extra 'count' variable */ //! corner case: 0 and 1 aren't prime numbers if (x == 0 || x == 1) return 0; for (int i = 2; i <= x / 2; i++) { if (x % i == 0) return 0; } return 1; }
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:
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prime numbers c
#include<stdio.h> void main() { int num; int prime = 1; printf("Enter a number = "); scanf("%d",&num); for(int i = 2; i < num; i++) { if(num % i == 0) { prime = 0; break; } } if(prime == 1 && num>0 && num !=1) { printf("%d is a prime number.", num); } else { printf("%d isn't a prime number.", num); } }
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); } } }
prime number in c
#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; }
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prime number in c
flag=0; scanf("%d", &num); for(i=2;i<=(num/2);i++) { if(num%i==0) flag=1; } if(flag==0) printf("%d is a prime number",num);
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