View Code of Problem 27

#include<stdio.h>
#include<math.h>
int main() {
	int t = 0;
	
	int b, c;
	while ((scanf("%d%d", &b, &c)) != EOF) {
		if (b > c)
		{
			int r = b;
			b = c;
			c = r;
		}
		int sum = 0;
			for (int i = b + 1; i < c; i++) {
				int count = 1;
					for (int z = 2; z <= sqrt(i); z++) {
						if (i % z == 0){
							count=0;
							break;
						}
					}
						if (count == 1 && i > 1)
							{
								sum = sum + i;	
						}
					}


			printf("%d\n", sum);

		}	return 0;
	}