The code has undefined behaviour. In Turbo C++, it just so happens that the three variables live at the exact positions on the stack where the missing printf() argument would be. This results in the undefined behaviour manifesting itself by having the “correct” values printed. However, you can’t reasonably rely on this to be the … Read more
Turbo C is a DOS only product. This means that it no longer runs “natively” on 64-bit versions of Windows, and must be run inside the XP compatibility penalty box.
In C++, and in C99 and C11, it is a special rule of the language that if the control flow reaches the end of the main function, then the function impliclty returns 0.
From the comp.os.msdos.programmer FAQ: “Floating point formats not linked” is a Borland run-time error (Borland C or C++, Turbo C or C++). Borland’s compilers try to be smart and not link in the floating- point (f-p) library unless you need it. Alas, they all get the decision wrong. One common case is where you don’t … Read more
In C the ternary operator is defined like logical-OR-expression ? expression : conditional-expression where conditional expression is defined like logical-OR-expression The assignment operator has a lower priority than the OR operator. Thus you have to write a >= 5 ? b = 100 : ( b = 200 ); Otherwise the compiler consideres the expression … Read more
I do not see the architecture of your program as the important stuff is missing. I would expect you got a list of objects per page with their positions,size,labels,color etc. in form of some arrays of struct and loop through that for booth rendering and mouse handling. Something like this Does anyone know of a … Read more
There’s no problem with this program. (Except probably some stylistic issues — using namespace std is not recommended). The problem is with Turbo C++. It is a very old piece of software. It implements a dialect of C++, so-called pre-ANSI C++, that has completely fallen out of use by the beginning of this millennium. The … Read more
Including <bits/stdc++.h> appears to be an increasingly common thing to see on Stack Overflow, perhaps something newly added to a national curriculum in the current academic year. I imagine the advantages are vaguely given thus: You only need write one #include line. You do not need to look up which standard header everything is in. … Read more