What do you want to Learn Today? How to do that? Writing C program with a function definition that needs to be called from another program file A header file with declarations of all the defined functions C program file to call the remote functions How to Create Header File in C Program? Here is a step-by-step procedure with complete code and a detailed explanation with examples. Step 1: Write a program and define any function that needs to be called from other files.
Step 2: Create header file in C Program and declare all the functions defined in the above util. Step 3: Write a program to call the function defined in util. C file. With all the basic header file required, you have to include util.
C You have added stdio. Note: Store all the above three program files in the same directory. Run it. On Windows: pro On Linux: You may need executable permission to execute the output file. Now execute,. If you require the same kind of operation to be performed in multiple program files, it is good practice to define the function in a single file and call it from whichever program file you need.
How to create your own function library in C programming language like stdio. Benefits of creating your own header file having common utility functions. Code re-usability : If you added a function in a header file, then you don't have to type it again in any program where you want to use it. Just include your header file using include preprocessor and call you function just like any other standard library function.
Easy to maintain : Later, If you want to change the internal implementation of any function, then you have to modify only in one place inside header file.
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