Is there any program that can run c but not in c plus plus?

Answer 1

== Yes. It may be funny. You cannot use keywords like newin c++ for variable declaration. But in C it is possible.

== The following definition is valid in C, invalid in C++: char str [3] = "ABC";

Answer 2

Basic difeerence is that C is procedure oriented programming language while C++ is Object Oriented Programming Language.

However all the concepts in c are available in c++.

All c programs can be compiled by using the c++ compiler but a c compiler cannot compile a c++ program.

In c++ some additional concepts were added beyond the c.

Answer 3

No. C++ is backwardly compatible with C thus every C program is also a valid C++ program. Some modification may be required in order to render the code fully C++ compliant (such as ensuring all functions are forward declared and that the main function returns an int), however preprocessor directives can be used to mark code that is specifically written in C and should be compiled as such.

Answer 4

C++ is a general purpose, cross-platform, object-oriented, high-level programming language. Virtually every operating system has one or more implementations of the language that will allow you to write programs specifically for that operating system. Although the standard language is designed to be portable, operating system code is not portable. However, you can write code that will filter operating system specific code to suit the current compiler, provided you have access to the appropriate operating system headers and libraries which are usually provided by the compiler as part of an Integrated Development Environment.

The types of programs you can create are limited only by your imagination. And while it may not be the best language for every type of program, it's certainly the best language for the majority of programming, capable of producing highly efficient native machine code. Although Java, another object-oriented language, is a good deal more portable than C++, Java compiles to byte code suitable for interpretation by the Java virtual machine and therefore doesn't perform well compared to C++ implementations of the same code.

Programs produced with C++ are generally robust and highly-scalable, although that aspect is largely dictated by good design. The language merely provides the tools, it's up to you how you use them. And since C++ is derived from C, you get all the advantages of C, including direct access to the underlying architecture and memory pointers, as well as the ability to incorporate low-level procedural code, such as native assembler routines.

Answer 5

No, because C++ is based on C. Thus, it can do everything what C can do.

Answer 6

For example:

int new; /* 'new' is a keyword in C++ */

char str[3] = "ABC"; /* Won't work in C++ */

void *p; char *s= p; /* requires explicit typecast */