Well in my main function, I have a while loop:

Code:
while (1) {
		
		printf("Enter a command: ");
		
		fgets(command, sizeof(command), stdin);
		command[strlen(command) - 1] = '\0';
		
		if (sscanf(command, "%d,%d", &A, &B) == 2) {
			int i;
			for (i = A; i < B; i++) {	
					   findAmicable(i);
                        }
                 }
}