C++ Please three question:

1. " in_file >> name >> count >> percent ( line 15) " Why the IDE can understand which word is "name", which number is "count" , which word is "percent".

2. Why does the "while function" show next lines of information instead show first line of information again and again?

3. if I delete the line 35, why the while function just run once(like 3rd pic).

=

babynames.txt - Notepad File Edit Format View Help 11 Michael 462085 2.2506 Jessica 302962 1.5436 2 Christopher 361250 1.7595 Ashley 301702 1.5372 3 Matthew 351477 1.7119 Emily 237133 1.2082 4 Joshua 328955 1.6022 Sarah 224000 1.1413 5 Jacob 298016 1.4515 Samantha 223913 1.1408 6 Nicholas 275222 1.3405 Amanda 190901 0.9726 7 Andrew 272600 1.3277 Brittany 190779 0.9720 8 Daniel 271734 1.3235 Elizabeth 172383 0.8783 Uu.LPPA # 6a (Global Scope) - void process_name (ifstream& in_file, double& total), string name; int count; double percent; in_file >> name >> count >> percent; if (in_file.fail()) { return; } if (total > 0) { cout 0 1 girl_total > 0); int rank; in file >> rank; if (in_file.fail() { return 0; } cout Options->De le when debugging stops. Press any key to close this window . . . 1 Michael 462085 2. 2506 Jessica 302962 1.5436 2 Christopher 361250 1. 7595 Ashley 301702 1.5372 3 Matthew 351477 1.7119 Emily 237133 1. 2082 4 Joshua 328955 1. 6022 Sarah 224000 1. 1413 5 Jacob 298016 1. 4515 Samantha 223913 1. 1408 6 Nicholas 275222 1. 3405 Amanda 190901 0.9726 7 Andrew 272600 1.3277 Brittany 190779 0.972 8. Daniel 271734 1. 3235 Elizabeth 172383 0.8783, 9 Tyler 262218 1.2771 Taylor 168977. 0. 8609 10 Joseph 260365 1. 2681 Megan 160312 0.8168 11 Brandon 259299 1. 2629 Hannah 158647 0.8083