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“printf” is a very famous function in “C” Programming. This is the primary function we use in “C” to display something on the screen. If you are a serious developer, definitely you will get a thought on developing the “printf” function or you will get a question “How it was developed?”. “printf” is a special function. […]
C language Programming provides functions to create and release memory dynamically. There are two types of functions ‘C’ provides: One type of functions allocates memory in the heap. malloc calloc realloc Other type of function(s) release the memory from the heap. free Now you will get the doubt; why release memory functions are required? Why […]
In ‘C’ programming we can pass arguments to an application or a program. We can call this as passing command-line arguments. I know you will ask the question “How to pass them?”. Good. Fortunately it is simple. As you aware, main() is the function where the execution of the program starts in ‘C’ programming. That means, if […]
clone() function is used to create a child process from calling process. Calling process will be the parent process of the child process. clone() function is used to run a particular function in a separate thread other than the calling process. Unlike fork() function where rest of the code after fork() function call will execute […]
C/C++ allows passing the variable number of arguments to its functions through a variable argument list (va_list). C/C++ provides a series of macros/functions va_start, va_arg, va_end to allow passing the variable number of arguments to its functions. In this article, we will discuss how to implement this in C/C++. Step 1. We will prepare a […]
fork() function is used to create a child process. The process who calls this function is called parent process. Once the fork() function is called, it creates an exact copy of the calling process. The syntax of the function is: pid_t fork(void); where pid_t is an unique integer which refers the process id. As we […]
Standard C Library provides tons of functions which are very useful and saves a lot of our development time. Through this article we are going to discuss gets() & puts() library functions. Before we start, I would like to mention one important note here which is related to gets() function. gets() function is not recommended […]
When we define a variable in C, have you ever noticed the variable has a scope? Every variable you define in C, has a scope defined; you are not allowed to access the variable beyond it’s scope. That means, the variable will be visible only within the defined scope. Through this article we are going […]
Converting one type of data to another type is the key thing when we deal with data using programming languages. C language supports this data conversion, and provides functions to ease our programming in C. Through this article we are going to discuss about atoi and itoa data conversion functions. atoi function This function is […]
Pointers play a major role in C Programming. Writing code with pointers is more error-prone than code without pointers. Understanding pointers is a bit difficult. The simple thing about a pointer is, a pointer is a variable that holds an address like variables holds a value. That means pointers will not store any values rather […]