#include<stdio.h>
int main()
int years;
printf("Enter the number of years of service: ");
scanf("%d", &years);
if (years < 1) {
    printf("Invalid Input\n");
} else if (years >= 1 && years <= 5) {
    printf("5%% Bonus\n");
} else if (years >= 6 && years <= 10) {
    printf("10%% Bonus\n");
} else {
    printf("")
}