Getting specific amount of values from the line

[yucecoder]

As title says, I need to get the specific amount of values from the input file’s line. The amount will be input, so program will know it. I have the following line to get values of 2 elements on line. It checks if both a and b gets values successfully or not. How can I implement it for i element instead of 2? As I said, i value will be user input.

if (!(iss >> a >> b)) { break; }

[nuderobmonkey]

std::vector<int> v;

for( int idx = 0; idx < i; idx++ )
{
    int tmp;
    if(!(std::cin >> tmp)) break;
    v.push_back( tmp );
}

[yucecoder]

std::vector<int> v;

for( int idx = 0; idx < i; idx++ )
{
    int tmp;
    if(!(std::cin >> tmp)) break;
    v.push_back( tmp );
}

It didn't work. I replaced this loop with my line, but it never gets the values. Program acted like it's infinite loop.

[Ganado]

Please show more context.

[yucecoder]

Please show more context.

Imagine my first input file is this:

1 2 3 4 5

And my second input file is this:

1 2 3

If I use the line if (!(iss >> a >> b >> c >> d >> e)) { break; } I can get 1, 2, 3, 4 and 5 from my first input file. And if I use if (!(iss >> a >> b >> c)) { break; } I can get 1, 2 and 3 from my second input file. I want this line to be generated according to input. (Don't worry about the input, I already handled that.). For example if I read my first input file, input will be 5 and I want to run if (!(iss >> a >> b >> c >> d >> e)) { break; }. And if I read my second input file, input will be 3 and I want to run if (!(iss >> a >> b >> c)) { break; }. So I need a loop that generates a, b, c, d, e, ... , z according to input size and implement them. How can I do this?

[Ganado]

I meant, the code that you posted doesn't show the issue that you describe. The code that you posted is not an infinite loop, although it's possible it's a really long loop if the value if i is very high. Therefore, you should show more code to let us reproduce the issue.

[yucecoder]

The code that you posted is not an infinite loop, although it's possible it's a really long loop if the value if i is very high.

Yes, that for loop is not an infinite loop, but when I run the code, it never ends so I need to terminate it. The i values that I work is 5-6 so I don't think it should take this much time. It instantly gives the expected result when I don't use the loop. But if I want this to work with any i value I know I have to use a loop.

Therefore, you should show more code to let us reproduce the issue.

What I basically do is; I get values from each line according to input value and store them in a vector.
For example, I get values from

1 2 3 4 5
6 7 8 9 10

and put each into a vector using push_back(). My vector will have 1,2,3,4,5,6,7,8,9,10 at the end. It is really simple operation, I don't know why that for loop doesn't work.