Creating Header file in C Language

Step1 : Type this Code 

int add(int a,int b)

{

return(a+b);

}

• In this Code write only function definition as you write in General C Program

Step 2 : Save Code

• Save Above Code with [.h ] Extension .
• Let name of our header file be myhead [ myhead.h ]
• Compile Code if required.

Step 3 : Write Main Program

#include<stdio.h>

#include"myhead.h"

void main()

{

int number1=10,number2=10,number3;

number3 = add(number1,number2);

printf("Addition of Two numbers : %d",number3);

}

1. Include Our New Header File .
2. Instead of writing < myhead.h> use this terminology “myhead.h”
3. All the Functions defined in the myhead.h header file are now ready for use .
4. Directly  call function add(); [ Provide proper parameter and take care of return type ]

Note

1. While running your program precaution to be taken: Both files [ myhead.h and sample.c ] should be in same folder.