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


char* inverte_string(char * str){
    char *v;
    int i=0,j,n;

    n=strlen(str);

    v=(char*)malloc((n+1)*sizeof(char));
    while (str[i] != 0){
        if (str[i]>= 'a' && str[i]<='z'){
            v[i]='z'-str[i]+'a';
        }
        else if(str[i]>='A' && str[i] <= 'Z'){
            v[i]= 'Z'-str[i]+'A';
        }
        i++;
    }


    v[i]='\0';


    return v;

}



int main(){

    char str[]="Aluno";
    char *v;

    v=inverte_string(str);

    printf("%s\n", v);

    return 0;


}