c++ - Unexpected results in Qt run in Application Output Pane (not in terminal) -

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i using qt creator 2.7.0 , compiling 5.0.2 mingw 32bit simple c++ main.cpp:

#include <iostream>  using namespace std;  int main() {     int i;     (i=1; i<52; i++)     {         cout << << endl;     }      return 0; }

on project configuration can check box "run in terminal", when windows command prompt shows , expected results of 1 through 51 being printed out 1 number per line on each run of program.

however, if uncheck , instead run in "application output" window. results not appear deterministic. on 1 run output number 1, on run stopped @ 48, run stopped @ 38. each time reporting exited code 0. anyways, what's deal here this?

here's .pro file:

template = app config += console config -= app_bundle config -= qt  sources += main.cpp


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