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C Programming Examples

#include<stdio.h>

int main() {
	int i, no, j=0;
	printf("Check the given number is Prime or Composite\n");
	printf("Enter a number:\n");
	scanf("%d", &no);
	i = no / 2;

	/* Loop the process using "while loop" */
	while(i >= 2) {
		if(no % i == 0) {
			j = 1;
			printf("It's a Composite number!\n");
			break;
		}
		i = i - 1;
	}
	if(j != 1)
		printf("It's a Prime Number!\n");
	return 0;
}


          /****** Output ******/
          

Check the given number is Prime or Composite

Enter a number:

6

It's a Composite number!


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Check the given number is Prime or Composite

Enter a number:

5

It's a Prime Number!

Learn more about Prime and Composite Number