Multiple inputs : input string with succeeding spaces and then an integer in C++

Asked Oct 26 '17 at 19:24

Active Oct 26 '17 at 19:38

Viewed 46 times

Not able to give input in the following format

1                //number of test case
"some string   " //string with succeeding spaces
13               //some integer

Below is the code:

int main(void){
    int i, j;
    int act_size;
    int tc;
    cin>>tc;
    std::string inp;
    while(tc--){
        getline(cin, inp);
        cin>>act_size;
        //inp = "Mr John Smith    ";
        //act_size = 13;
        printNewString(inp, act_size);
    }
}

When I run this program, it skips over the act_size input and program exits without any output. But if I hard code the values, it works fine.

edited Oct 26 '17 at 19:38

asked Oct 26 '17 at 19:24

Raghav Mittal

`cin>>tc;` attempts to read an `int` that is not in the input – 463035818_is_not_an_ai Oct 26 '17 at 19:27
1

Possible duplicate of [How to handle wrong data type input](https://stackoverflow.com/questions/10349857/how-to-handle-wrong-data-type-input) – 463035818_is_not_an_ai Oct 26 '17 at 19:30
@tobi303 Sorry, I forgot to mention test case input in the format. The error which I am discussing has occurred with the updated input format. – Raghav Mittal Oct 26 '17 at 19:41
see [here](http://en.cppreference.com/w/cpp/string/basic_string/getline) in the Notes section. – 463035818_is_not_an_ai Oct 26 '17 at 19:51
`cin` does not consume the `\n`, so `getline` reads only that, there are also dupes on that – 463035818_is_not_an_ai Oct 26 '17 at 19:53

Multiple inputs : input string with succeeding spaces and then an integer in C++

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