Why does this function always return 0? - c++

Question

I have a function that is always returning 0. The problem I believe is that data is an unsigned char, which is not part of the library. It needs to be unsigned char. So how can I make this work, because what I have doesn't.
#include <string>
#include <iostream>
int Count( const std::string & str,
const std::string & obj ) {
int a = 0;
int b = 0;
int c = 0;
int d = 0;
std::string ::size_type pos = 0;
while( (pos = obj.find( str, pos ))
!= std::string::npos ) {
a++;
b++;
c++;
d++;
pos += str.size();
}
return a;
return b;
return c;
return d;
}
void printTcpContent(unsigned char *data,int)
{
std::string s = (const char*) data;
int a = Count( "text/html", s );
int b = Count( "text/plain", s );
int c = Count( "image/jpg", s );
int d = Count( "image/png", s );
std::cout << a << std::endl;
std::cout << b << std::endl;
std::cout << c << std::endl;
std::cout << d << std::endl;
}

Answer 1

Try this code instead:
int Count( const std::string & strToFind,
const std::string & strToSearch ) {
int n = 0;
std::string ::size_type pos = 0;
while( (pos = strToSearch.find( strToFind, pos )) != std::string::npos ) {
n++;
pos += strToSearch.size();
}
return n;
}
Also, you can test it works by calling it with smaller test strings, eg Count("3", "1234534")