Function exercise     Exercise: Write a program to do mathematical operations such as addition, subtraction, multiplication, and division of integers.  You have to follow these two steps.  Do…

  Returning data from a function     Now let's modify this function(Figure 1) to return a value to the caller. In this case, the main is the caller, and…

  Function prototypes     Function Prototype(Declaration) In 'C' functions first have to be declared before they are used. Prototype lets compiler to know about the return data type, argument…

  Introduction to functions in 'C'     In this article, let's learn about Functions in 'C.' Let's learn how to write functions, what a function prototype is, how to…

  ASCII codes     In this article, let's explore ASCII codes.  The American National Standards Institute(ANSI), which developed ANSI C, also developed the ASCII codes.  ASCII stands for "American…

  'Extern' storage class specifier     In this article, let's understand 'extern' keyword. In C, the 'extern' storage class specifier is used to declare a variable or function that…