Addition of 2 Numbers using Function: C Program

https://technotip.com/7730/addition-of-2-numbers-using-function-c-program/

In this video tutorial lets learn how to add two integer numbers using functions in C programming language.

Here we call user defined function add from within printf() function. We pass 2 integer variables as argument to add method. The values of variable a and b are copied to variable x and y. Note that values of variable x and y are local to function add and main function do not know values of x and y. x and y are separate copy and altering which do not alter the value of variables a and b.

a and b are called actual arguments. x and y are called formal arguments.

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