In the journey of learning C functions, we learned many concepts related to functions. We learned to define our own function, passing arguments to a function, returning value from a function, recursive function etc. In this chapter, I will talk something interesting about passing variable length arguments to a function.
Have you ever wondered how functions like
scanf() works? As they readily accept any number of arguments passed. You can say -
printf("Learning at Codeforwin"); // Single argument
printf("Codeforwin was founded in %d", 2015); // Two arguments
printf("Today is %d-%d-%d", 19, 9, 2017); // Four arguments
In real you can pass n number of arguments to
printf(), but how it works?
Continue reading Variable length arguments (var-args) in C
Write a C program to print hollow square star pattern with diagonal using loops. How to print hollow square star pattern with diagonals in C program. Logic to print hollow square star pattern with diagonal in C programming.
Enter number of rows: 5
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Recursion is expressing an entity in terms of itself. In C programming, recursion is achieved using functions known as recursive function. Recursive functions are very powerful in solving and expressing complex mathematical problems.
Until now, we called a function from another function. However, C language allows a function to call itself known as Recursive function.
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A function is a sub-part of a program that contains a collection of statements grouped together to perform some specific task. Functions in C programming is categorized in two category -
- Library function
- User defined function
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A function is a collection of statements grouped together to do some specific task. It may return a value. However, in no case a function will return more than one value. What does it mean by returning a value and where it is returned? To understand this let us consider an example.
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Function arguments are the inputs passed to a function. A function must declare variables to accept passed arguments. A variable that accepts function argument is known as function parameter.
In programming function argument is commonly referred as actual parameter and function parameter is referred as formal parameter. I will be using these words interchangeably throughout this series of C programming tutorial.
Continue reading Function arguments in C – Call by value and Call by reference
A function is a collection of statements grouped together to do some specific task. In series of learning C programming, we already used many functions unknowingly. Functions such as -
pow() or the most important the main() function. Every C program has at least one function i.e. the
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Infinite loop is a looping construct that iterates forever. In programming life either intentionally or unintentionally, you come across an infinite loop. Generally a program in an infinite loop either produces continuous output or does nothing. Infinite loops are also known as indefinite or endless loop.
As a novice programmer, you must know how to debug an infinite loop. As an intermediate programmer you must know how and when to use infinite loop. Let us first learn when to use infinite loop and how to define.
Continue reading Infinite loops in C – Use and Debugging
goto is a jump statement used to transfer program control unconditionally from one part of a function to another. I have used the word unconditionally because there is no restriction on control transfer. You can transfer program control from one position to any position within a function. Many programmers uses
goto to gain full control on their program.
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In the series of learning C programming, we learned to repeat a set of statements and terminate a repetitive statement using
break. Here in this post, I will explain another program flow control statement i.e.
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