Answer Posted / ashish kumar

#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
#include<math.h>
#include<graphic.h>
#include<string.h>
#include<ctype.h>
#include<malloc.h>
#include<calloc.h>
#include<sound.h>

Above list are few header file in C. And many more header
file in C language.

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