int main(void) {
//	setvbuf(stdout, NULL, 0, _IOLBF);
	puts("!!!Hello World!!!\n");
	int integer1;
	int integer2;
	int sum;
	printf("Starting program\n");     fflush(stdout);
	printf("Enter first  integer: "); fflush(stdout);
	scanf("%d", &integer1);

	printf("Enter second integer: "); fflush(stdout);
	scanf("%d", &integer2);

	sum = integer1 + integer2;

	printf("Sum is:               %d\n", sum);
	printf("Done\n");

	return EXIT_SUCCESS;
}