For Loop in C ( Easy )

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>

void print_val(int i){
    if(i==1){
        printf("one\n");
    }else if(i==2){
        printf("two\n");
    }else if(i==3){
        printf("three\n");
    }else if(i==4){
        printf("four\n");
    }else if(i==5){
        printf("five\n");
    }else if(i==6){
        printf("six\n");
    }else if(i==7){
        printf("seven\n");
    }else if(i==8){
        printf("eight\n");
    }else if(i==9){
        printf("nine\n");
    }
}

int main() 
{
    int a, b, i;
    scanf("%d\n%d", &a, &b);
  	
    for(i=a; i<=b; i++){
        if(i<10){
            print_val(i);
        }
        else{
            if(i%2==0){
                printf("even\n");
            }else{
                printf("odd\n");
            }
        }
    }

    return 0;
}