Simple addition in while.

[Guzfraba]

Hi :)
Let's say I have a file with numbers, each on a line.
Which is the most simple way to sum up the numbers from the file, using as less variables and instructions as possible.

Any more simple way than this ?

int temp,sum=0;
while(file>>temp){
sum+=temp;
}

Any way to do the addition in the condition ?

[giblit]

Any way to do the addition in the condition ?

You could but its not any different than what you did. I wouldn't see any benefit over

int temp, sum = 0;
while(file >> temp && sum += temp);

//or
int temp, sum = 0;
while(file >> temp && sum += temp){}

All 3 do the same thing.

[Guzfraba]

Thank you. I was wondering if one can do this with just a variable.