Convert a String into an Integer
How to convert a string into an integer in C program?
This is done by using the function named as atoi(). This function atoi() is present in the header file named as stdlib.h. When programmers use...
C
String handling functions
What is the string handling functions present in header file string.h? There are number of string handling functions present in string.h. In other words if a programmer uses any of the function prese...
Position of Substrings
How to determine different positions of substrings within a string in C? There are numerous functions available in C to achieve the purpose of finding different positions of a substring with a string
printf() Function Return Value
What is the return value from printf() function printf function always returns the number of characters printed. Let us understand this with an example
Convert a String into Long Value
What string function is used to convert a string into long value? This is done by using the function named as atol() . This function atol() is present in the header file named as stdlib.h. So when p...
What happens when a variable is not declared in function definition?
Generally in C program the function definition and calling takes the form as given below:
What happens when a variable is not initialized in main function?
When a variable is not initialized in main function it contains garbage value. This can be well seen from the example below
What is the default return value of a function?
The default return value from a function is int. In other words, unless explicitly specified the default return value by compiler would be integer value from function. When a programmer wants other ...
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
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[])