#include "profit.hpp"
int main() { $ // <-- put a dollar after every curly brace to determinate cpu cost of the scope
    for( int x = 0; x < 10000000; ++x ) { $ // <-- functions or loops will apply too
        // slow stuff...
    }
    profit::report(std::cout); // report stats to std::cout
    profit::reset();           // reset current scope
    profit::reset_all();       // reset all scopes (like when entering a new frame)
}

~/profit> cat ./sample.cc

#include <iostream>
#include <chrono>
#include <thread>
#include "profit.hpp"

void c( int x ) { $
#   define sleep(secs) std::this_thread::sleep_for( std::chrono::microseconds( int(secs * 1000000) ) )
    while( x-- > 0 ) { $
        sleep(0.0125);
    }
}
void b( int x ) { $
    while( x-- > 0 ) { $
        sleep(0.0125);
        c(x);
    }
}
void a( int x ) { $
    while( x-- > 0 ) { $
        sleep(0.0125);
        b(x);
    }
}

int main() {{ $
        a(10);
    }
    profit::report( std::cout );
}

~/profit> g++ sample.cc -std=c++11 && ./a.out
+------------------------------------------------------------+
|   min |   avg |   max |     % |   # | scope                |
+------------------------------------------------------------+
|  0.00 |  0.00 |  0.00 |  0.00 |   1 | main(sample.cc:25)   |
|  0.00 |  0.00 |  0.00 |  0.00 |   1 | a(sample.cc:18)      |
|  5.71 |  5.71 |  5.71 |  5.71 |  10 |   a(sample.cc:19)    |
|  0.00 |  0.00 |  0.00 |  0.00 |  10 |    b(sample.cc:12)   |
| 25.71 | 25.71 | 25.71 | 25.71 |  45 |     b(sample.cc:13)  |
|  0.00 |  0.00 |  0.00 |  0.00 |  45 |      c(sample.cc:6)  |
| 68.57 | 68.57 | 68.57 | 68.57 | 120 |       c(sample.cc:8) |
+------------------------------------------------------------+

~/profit> g++ sample.cc -std=c++11 -D_= && ./a.out
~/profit>