| #include<stdio.h> int main() { int number, i; int prime = 1; printf("C Program to Find Prime Number in C \n"); printf("Enter Number : "); scanf("%d", &number); if (number <= 1) { printf("A Prime number must be a positive integer greater than 1, so %d is not a Prime number \n", number); printf("Press enter to continue... \n"); fflush(stdin); getchar(); return 0; } for (i = 2; i < number && prime; i++) { if (number%i == 0) prime = 0; } if (prime) printf("%d is Prime number \n", number); else printf("%d is Composite number \n", number); printf("Press enter to continue... \n"); fflush(stdin); getchar(); return 0; } |
Prime Number in C Output Screenshot
C Program
