Post date: May 6, 2011 11:21:34 AM
Scenario: some time we need a C function that need to return the string pointer.
void GetConfigFile(char **path)
{
//String variable used to read the configuration file
std::string configFile = "";
if(0 != "C://")
{
configFile = "c://";
//append the string at end of the exsisting one
configFile.append("//conf//ConfigFile.xml");
}
else
{
configFile = "C://ConfigFile.xml";
}
//Allocating the memeory for the pointer
*path= (char*) malloc(100*sizeof(char));
//Copy the value from one to another.
strcpy(*path, (char*) configFile.c_str());
}
Main method to calling that function
int main(int argc, char **argv)
{
//Create a char pointer
char* path;
GetConfigFile(&path) ;
//Print the pointer values
printf("%s", path);
//Assign pointer to string varaible
std::string strPath = path;
//Print the string variable.
printf("Config %s", strPath.c_str());
getch();
}