How it works...

Debuggers are powerful tools that allow you to see everything about your code as it is running, including variable states.

Stepping over a line of code (F10) executes the line of code in its entirety, and then pauses the program again, immediately, at the next line. If the line of code is a function call, then the function is executed without pausing at the first line of code of the function call, as follows:

void f() 
{ 
  // F11 pauses here 
  UE_LOG( LogTemp, Warning, TEXT( "Log message" ) ); 
} 
int main() 
{ 
  f(); // Breakpoint here: F10 runs and skips to next line 
} 

Stepping into a line of code (F11) will pause execution at the very next line of code run.