Paresh, for what i understood u have a u want to print a "matrix" of pairs (T,V), right?

if u wish to do that see the following code, written for g++.

#include

using namespace std;

double tF(double V);\\suppose this is your temperature vs velocity function.

int main(argc,char ** argv){

double velocity[10];//suppose your velocity can assume only 10 values.

ofstream file("TempVsVel.txt",ofstream::out);//open a file.

//now u need only to iterate through the values.

//now, i don't know the information about the temperatureFunction, because until now i think we only have one variable.... so there will be only a vector as a result.

//This being. (tF(v[i]),v[i]).

}

Please inform-me with more details so i can help. A small snippet of code could help alot. anyways until now that's what i understood.