How to call C header that is not provided generally by system in C++?
Headers can be called by using extern C Syntax of extern C is: extern "C" function declaration for example to call C functions from C++ we can write
Programming
How is the main() function declared?
The declaration of main can be done as int main() One more declaration that can be taken by main is command line arguments form int main(int argc, char *argv[])
How does the function call within function get evaluated?
Whenever we have more than one function which is called for a finite number of times then such a function gets evaluated from inside out.
What is difference between call by value and call by reference in func...
The arguments passed to function can be of two types 1. Values passed 2. Address passed The first type refers to call by value and the second type refers to call by reference.
Base Address of the String
What happens when we try to change the value of base address of the string? The base address of the sting takes a special place in the context of strings. This is because suing this base address onl...
How to define command line arguments
The main functions can have in it arguments passed which are called as command line arguments. The command line arguments are two in number which are namely: Argument count denoted by argc and Argume...
How to develop compile and run a C program
The steps involved in building a C program are: 1. First program is created by using any text editor and the file is stored with extension as .c
Importance of Header Files
What is the importance of header files? The main role of header file is it is used to share information among various files. In brief, if we have several functions say 4 functions named as f1, f2, f...
What are the Format Specifiers used with printf?
There are several format specifiers available in printf. The format specifier used varies depending on the data type used for printing. The given below are some of the format specifiers used with pri...
exit and return statements
How does the exit () and return () differ exit () is used to exit the program as a whole. In other words it returns control to the operating system.