How can i fix this (is_sorted) , recursive function?

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How can i fix this (is_sorted) , recursive function? Target: This function takes a string as a input parameter and returns TRUE if characters in the string are in alphabetical ascending order; returns FALSE otherwise. Characters can be lowercase or uppercase.

#include<stdio.h>
#define SIZE 50
typedef enum{FALSE,TRUE} Bool;

Bool is_sorted(const char *str);

int main(){

    char arr1[SIZE]="aSTYoLPNDeSaFAE";  
    char arr2[SIZE]="aGjklOvz";

    if(is_sorted(arr1)==TRUE){
        printf("arr1 (is_sorted) Yes \n");
    }
    else
    {
        printf("arr1 (is_sorted) No \n");
    }

    if(is_sorted(arr2)==TRUE){
        printf("arr2 (is_sorted) Yes \n");
    }
    else
    {
        printf("arr2 (is_sorted) No \n");
    }

    return 0;
}

Bool is_sorted(const char *str){
    if(str[0]=='\0'){
        return FALSE;
    }
    else if(strcmp(&str[0],&str[1])<0)
    {
        return TRUE;
    }
    else
    {
        return FALSE;
    }

    return is_sorted(&str[1]);
}

asked 48 secs ago

us23

1

How can i fix this (is_sorted) , recursive function?