Caractere Fisa 8

#include <iostream>
#include <string.h>

using namespace std;

void cuv(char s[256])
{
    char *p;
    int k=0;
    cin.get(s,256);
    p=strtok(s," ");
    while(p)
    {
        if(strchr(p,'a'))
            k++;
        p=strtok(NULL," ");
    }
    cout<<k;
}

void abreviere(char s[256])
{
    char *p,s1[256];
    int i=0;
    cin.get(s,256);
    p=strtok(s," ");
    while(p)
    {
        if(p[0]>='A' && p[0]<='Z')
        {
            s1[i]=p[0];
            i++;
        }
        p=strtok(NULL," ");
    }

    s[i]=NULL;

    cout<<s1;
}

void invLit(char s[256])
{
    char *p,aux,s1[256]="";
    cin.get(s,256);
    p=strtok(s," ");

    while(p)
    {
        if(strlen(p)>=3)
        {
            aux=p[0];
            p[0]=p[strlen(p)-1];
            p[strlen(p)-1]=aux;
        }
        strcat(s1,p);
        strcat(s1," ");
        p=strtok(NULL," ");
    }

    s1[strlen(s1)-1]=NULL;
    strcpy(s,s1);

    cout<<s;
}

int main()
{
    char s[256];
    invLit(s);
    return 0;
}