Reverse each word is a string

/********************************************************
* *
* Reverse each word is a string *
* *
* *
*********************************************************/
#include "iostream"
using namespace std;
void reverse(char *, int , int);
int main()
{
char src[] = "My name is Abc Xyz. My dog's name is Max.";

int len = strlen(src);

int s = 0; //start index of a word
int t = 0; //end index of a word

while(t < len){
while((isalpha(src[t]) || src[t] == '\'') && t < len) t++; //find the end index of a word
reverse(src,s,t-1); //reverse the word at [s, t-1]
while(!isalpha(src[t]) && t < len) t++; //find the start index of next word
s = t; // set the start index of the next word
}
cout << src << endl;


}

/****************************************
* *
* reverse a word *
* *
*****************************************/
void reverse(char *str, int s, int t)
{
char temp;
while (s < t){
temp = str[s];
str[s] = str[t];
str[t] = temp;
t--;
s++;
}

}