dupa

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

char na_male(char);
char * na_male2(char *);

int main(int argc, char *argv[]){

    char * tekst=strdup("AsDfGhHjKLPju");
    printf("%s\n",na_male2(tekst));

}

char na_male(char c)
{
     if( c>='A' && c<='Z')
     {
         c-='A'-'a';
     }

     return c;}
char *na_male2(char *s)
{
 char * tmp = strdup(s);
 char i,d = strlen(tmp);
 for (i=0; i<d; i++) tmp[i]=na_male(tmp[i]);
 return tmp;}