please help!

[noktalivirgul]

I have a code such that:

class ambientvar{
public:
float temperature;
float pressure;
float power;
ambientvar(){};
ambientvar(float,float,float);
};
ambientvar::ambientvar(float temp, float press, float pow){
	temperature= temp;
	pressure=press;
	power=pow;}

int main(){
	float mainpress,maintemp,mainpow,allvariables;
	vector<ambientvar> list;
	ifstream myfile ("example.txt");
	int j;
	
	for( j=0;j<7500;j++)
		{	myfile >> allvariables;
			int div,mod=j%3;
			div=j/3+1;
			if(mod==0)
				maintemp = allvariables ;
				
			if(mod==1)
				mainpress=allvariables;
				
			if(mod==2)
				mainpow=allvariables;
				//list.push_back(*ambi1)}}
			ambientvar ambi(maintemp,mainpress,mainpow);
			list.push_back(ambi);
	}
	vector<ambientvar>::iterator it;

	ambientvar ambi2;
	ambi2=list[5];
		float ttt;
	ambi2.temperature=ttt;
	cout<<ttt;

But the result is always o what can be the reason for it???????

[Peter87]

You create ttt and prints it, but you never assign it a value.

[noktalivirgul]

actuallt i am trying to assign it "the" value in the 5th object's temperature.

[Peter87]

The only place I can see that the program is outputting is on line 42, where it prints the value of ttt. Is this what you mean by "the result"?

[noktalivirgul]

yes. i want to see ttt as the value in list[5]-ambi2.temperature.

[Peter87]

Like this?

float ttt = ambi2.temperature;
cout<<ttt;

[noktalivirgul]

thank you this gave me a value different than 0 but also not the 5th ambi's temperature.

ambientvar ambi2;
	                       ambi2=list[5];

I think from this line i should get an object with 3 variables. and if i write ambi.temperature i get temperature if a write ambi.press i get press and so on...

But ı only obtained 4th input from my file.

[Peter87]

Note that list[5] gives you the 6th element in list because the indices starts at zero.