rot13

#include <stdio.h>
#include <stdlib.h>
#define vel 15

void unos(char* string)
{
    int i=0;
    char c;
    do {
        c=getchar();
        string[i]=c;
        i++;
    } while (c!='\n' && i<vel);
    string[i-1]=='\0';
}
void rot13 (char* string)
{ while (*string!='\0')
{
    if ((*string>='a' && *string<='m') || (*string>='A' && *string<='M'))
        *string+=13;
    else if ((*string>='n' && *string<='z') || (*string>='N' && *string<='Z'))
        *string-=13;
    string++;
}

}
int main ()
{
    char* rijec[vel];
    int i=0;
    printf("Unesite rijec do 15 znakova: ");
    unos(rijec);
    rot13 (rijec);
    printf("%s", rijec);
    return 0;

}