How do you compile the program in c plus plus program?

Answer 1

C++ programs consist of one or more translation units that must be compiled and linked to create an executable. Each translation unit is compiled separately to produce an object file. When all translation units are compiled, the object files are linked.

Translation units must be preprocessed before they can be compiled. That is, all macros must be expanded (replacing macro tokens with their expanded definitions) and all required include files are pulled in. The end result is an intermediate file which is the actual file processed by the compiler. During preprocessing of a translation unit, the include files for that unit are also preprocessed and expanded as necessary.

Not all translation units need to be compiled in every compilation. If a modification to the program has no effect upon a translation unit, the object file generated by a prior compilation can be used instead. This helps speed up the compilation process.

Headers that require little or no maintenance (such as standard library headers) can also be precompiled to help speed up the process even further.

Header files are often included in several translation units but can only be included once per compilation. To avoid unnecessary inclusions, headers typically use special macros known as inclusion guards of the following form:

// file: my_header.h

#ifndef _MY_HEADER_H_

#define _MY_HEADER_H_

// content goes here

#endif _MY_HEADER_H_

Inclusion guards typically use the file name as the basis for the macro definition and are deliberately ugly to avoid name clashes with other macros. The first time the header is processed, the macro will be undefined thus the content can be pulled into the intermediate file. All subsequent inclusions will see that the macro is already defined and will ignore the content.

Answer 2

This is typically handled by your IDE's build command, which not only compiles your program but links it in a single step. In Microsoft Visual Studio, for instance, you compile and link with the F7 function key (or select Build > Build Solution from the menu bar). To examine the command line equivalents, open the project properties (ALT+F7) and examine the C/C++ > Command Line and the Linker > Command Line pages.

Answer 3

Use your compiler's IDE and look for an option to build your executable. The verb "build" is commonly used to indicate your program will be both compiled and linked to produce an executable.

To do the same thing from the command line, you need to determine the command that invokes the compiler. E.g., in VC++, the command is cl.exe but in GCC it is gcc.exe. Consult your compiler's documentation for the correct syntax.

Answer 4

No. By definition, a C++ program is a program that can only be compiled by the C++ compiler. Although the two languages do have much in common, not all C programs are valid in C++ but no C++ program can ever be valid in C. That is, if a C++ program can be compiled by a C compiler then it was never a C++ program to begin with; it was just a C program.

Answer 5

No. C compilers can only compile C programs. However, Most C++ compilers can compile both C and C++ programming languages. Some IDE prefer to use C++ compiler in compiling both languages to conserve space and to implement ease of use for all of the users.

A great example for this is GCC. GNU Compiler Collection's 'gcc.exe' can only compile C programs. If you want to compile a C++ program, you must call 'g++.exe' instead of 'gcc.exe'. You can still compile C programs using 'g++.exe'.

Answer 6

No, only compiler, there's no C++-interpreter